| CODE | RAILROAD NAME |
| AWK | A.W.KNIGHT |
| AR | ABERDEEN AND ROCKFISH |
| ABS | ABILENE AND SOUTHERN |
| ARN | ABITIBI RAILWAY AND NAVIGATION COMPANY |
| ASL | ADIRONDACK AND ST.LAWRENCE |
| AW | AHNAPEE AND WESTERN |
| ACY | AKRON, CANTON AND YOUNGSTOWN |
| ATR | ALABAMA AND TOMBIGBEE RIVER |
| AV | ALABAMA AND VICKSBURG |
| ACC | ALABAMA CONSTRUCTION COMPANY |
| AGS | ALABAMA GREAT SOUTHERN |
| ATN | ALABAMA, TENNESSEE AND NORTHERN |
| AVIC | ALABAMA-VIRGINIA IRON COMPANY |
| ASJ | ALAMEDA AND SAN JOAQUIN |
| ARR | ALASKA RAILROAD |
| ASR | ALBANY STREET RAILWAY |
| APRE | ALBERTA PRAIRIE RAILWAY EXCURSION |
| ALCR | ALBION LUMBER COMPANY RAILROAD |
| AGR | ALDER GULCH RAILROAD |
| AC | ALGOMA CENTRAL |
| ACHB | ALGOMA CENTRAL AND HUDSON BAY |
| AK | ALLEGHENY AND KINZUA RAILROAD |
| ALLC | ALLEGHENY CENTRAL |
| ALC | ALLEN LUMBER COMPANY |
| ABL | ALLEYTON AND BIG LAKE |
| AL | ALMANOR |
| AE | ALTON AND EASTERN |
| ALS | ALTON AND SOUTHERN |
| ALTN | ALTON RAILROAD |
| APR | ALTON-PACIFIC RAILROAD |
| AMDR | AMADOR CENTRAL RAILROAD |
| ACRY | AMES AND COLLEGE RAILWAY |
| ACM | ANACONDA COPPER MINING |
| AMLC | ANDERSON AND MIDDLETON LUMBER COMPANY |
| ANDL | ANDERSON LOGGING |
| ANDS | ANDREWS STEEL |
| ANR | ANGELINA AND NECHES RIVER |
| ACLC | ANGELINA COUNTY LUMBER COMPANY |
| AA | ANN ARBOR |
| APRR | APACHE RAILROAD |
| AN | APALACHICOLA NORTHERN |
| ARAT | ARCADE AND ATTICA |
| ABR | ARCADIA AND BETSEY RIVER |
| AMR | ARCATA AND MAD RIVER |
| ARL | ARGENT LUMBER COMPANY |
| AGP | ARGENTINE AND GRAY'S PEAK |
| ARGC | ARGENTINE CENTRAL |
| AZC | ARIZONA COPPER |
| AZE | ARIZONA EASTERN |
| ALM | ARKANSAS AND LOUISIANA MISSOURI |
| ARK | ARKANSAS RAILROAD |
| AOW | ARKANSAS, OKLAHOMA AND WESTERN |
| ASAP | ASAPH RAILROAD |
| ASHC | ASHLAND COAL AND IRON |
| AICO | ASHLAND IRON COMPANY |
| AAM | ASHTOLA AND ALLEGHENY MOUNTAIN |
| ACRR | ASTORIA AND COLUMBIA RIVER |
| ATSF | ATCHISON, TOPEKA AND SANTA FE |
| ACAL | ATLANTA AND CHARLOTTE AIR LINE |
| ASAB | ATLANTA AND ST.ANDREWS BAY |
| AWP | ATLANTA AND WEST POINT |
| ABA | ATLANTA, BIRMINGHAM AND ATLANTIC |
| ABC | ATLANTA, BIRMINGHAM AND COAST |
| AEC | ATLANTIC AND EAST CAROLINA |
| ANC | ATLANTIC AND NORTH CAROLINA |
| AP | ATLANTIC AND PACIFIC |
| AWR | ATLANTIC AND WESTERN |
| ACR | ATLANTIC CITY RAILROAD |
| ACL | ATLANTIC COAST LINE |
| AGW | ATLANTIC GREAT WESTERN |
| ASC | ATLANTIC STEEL COMPANY |
| AVW | ATLANTIC, VALDOSTA AND WESTERN |
| AUG | AUGUSTA RAILROAD |
| ANW | AUSTIN AND NORTH-WESTERN |
| ACTY | AUSTIN CITY RAILROAD |
| BBLC | B.AND B.LOGGING COMPANY |
| BCC | BABCOCK COAL AND COKE COMPANY |
| BLB | BABCOCK LUMBER AND BOOM COMPANY |
| BABL | BABCOCK LUMBER COMPANY |
| BLW | BALDWIN LOCOMOTIVE WORKS |
| BAL | BALTIMORE AND LEHIGH |
| BO | BALTIMORE AND OHIO |
| BOCT | BALTIMORE AND OHIO CHICAGO TERMINAL |
| BOSW | BALTIMORE AND OHIO SOUTHWESTERN |
| BAR | BANGOR AND AROOSTOOK |
| BRRC | BARRE AND CHELSEA |
| BART | BARTON COAL COMPANY |
| BATH | BATH AND HAMMONDSPORT |
| BPCR | BAY POINT AND CLAYTON |
| BVCL | BAY VIEW AND CROOKED LAKE |
| BYSL | BAYSIDE LUMBER COMPANY |
| BHER | BEAR HARBOR AND EEL RIVER |
| BHLC | BEAR HARBOR LUMBER COMPANY |
| BMRR | BEAUFORT AND MOREHEAD |
| BCRR | BEAVER CONNECTING RAILROAD |
| BCCR | BEAVER CREEK & CUMBERLAND COAL |
| BML | BELFAST AND MOOSEHEAD LAKE |
| BELL | BELL LOGGING COMPANY |
| BCZ | BELLAIRE, CINCINNATI AND ZANESVILLE |
| BLC | BELLEFONTE CENTRAL |
| BBBC | BELLINGHAM BAY AND BRITISH COLUMBIA |
| BRC | BELT RAILWAY OF CHICAGO |
| BMLC | BEMIS LUMBER COMPANY |
| BC | BENNETTSVILLE AND CHERAW |
| BLLC | BENSON LOGGING AND LUMBERING COMPANY |
| BT | BENSON TIMBER COMPANY |
| BENT | BENTONVILLE RAILWAY |
| BLE | BESSEMER AND LAKE ERIE |
| BVS | BEVIER AND SOUTHERN |
| BLBC | BIG LAKES BOX COMPANY |
| BRWR | BIG RAPIDS AND WESTERN |
| BSC | BIG SANDY AND CUMBERLAND |
| BB | BILLERICA AND BEDFORD |
| BNW | BIRMINGHAM AND NORTH WESTERN |
| BSE | BIRMINGHAM AND SOUTHEASTERN |
| BDCR | BLACK DIAMOND COAL AND RAILROAD |
| BHC | BLACK HILLS CENTRAL |
| BMTR | BLACK MOUNTAIN RAILROAD |
| BRW | BLACK RIVER AND WESTERN |
| BESW | BLACKWELL, ENID AND SOUTHWESTERN |
| BSW | BLOEDEL, STEWART AND WELCH |
| BDLM | BLOEDEL-DONOVAN LUMBER MILLS |
| BJLC | BLUE JAY LUMBER COMPANY |
| BMRG | BLUE MOUNTAIN AND READING |
| BR | BLUE RIDGE |
| BRNC | BLUE RIDGE RAILWAY AND NAVIGATION COMPANY |
| BLR | BOCA AND LOYALTON |
| BLR | BOCA AND LOYALTON RAILROAD |
| BHWC | BOICE HARDWOOD LUMBER COMPANY |
| BPLC | BOISE-PAYETTE LUMBER COMPANY |
| BHS | BONHOMIE AND HATTIESBURG SOUTHERN |
| BOOK | BOOK CLIFF |
| BKLC | BOOTH KELLY LUMBER COMPANY |
| BBAY | BOOTHBAY RAILWAY |
| BA | BOSTON AND ALBANY |
| BL | BOSTON AND LOWELL |
| BM | BOSTON AND MAINE |
| BNYA | BOSTON AND NEW YORK AIR LINE |
| BP | BOSTON AND PROVIDENCE |
| BHE | BOSTON, HARTFORD AND ERIE |
| BNYP | BOSTON, NEW YORK AND PHILADELPHIA |
| BRBL | BOSTON, REVERE BEACH AND LYNN |
| BBR | BOYNTON BICYCLE RAILWAY |
| BFB | BRADFORD AND FOSTER BROOK |
| BRAD | BRADLEY LOGGING COMPANY |
| BRMR | BRANCH MINT RAILROAD |
| BH | BRIDGTON AND HARRISON |
| BSR | BRIDGTON AND SACO RIVER |
| BGC | BRIGGS AND GREGG COMPANY |
| BRIM | BRIMSTONE |
| BCER | BRITISH COLUMBIA ELECTRIC |
| BWAY | BROADWAY RR |
| BCTY | BROOKLYN CITY RAILROAD |
| BRKC | BROOKLYN COOPERAGE COMPANY |
| BEDT | BROOKLYN EASTERN DISTRICT TERMINAL |
| BERR | BROOKLYN ELEVATED RAILROAD |
| BRSY | BROOKLYN STREET RAILWAY |
| BBWE | BROOKLYN, BATH & WEST END |
| BBCI | BROOKLYN, BATH AND CONEY ISLAND |
| BRKV | BROOKVILLE RAILROAD |
| BMCL | BUCHANS MINING COMPANY |
| BKER | BUCKSPORT AND EEL RIVER |
| BS | BUFFALO AND SUSQUEHANNA |
| BCG | BUFFALO CREEK AND GAULEY |
| BUFF | BUFFALO FURNACE (CORRIGAN MCKINNEY CO.) |
| BNP | BUFFALO, NEW YORK AND PITTSBURGH |
| BRP | BUFFALO, ROCHESTER AND PITTSBURGH |
| BUC | BUFFALO-UNION CAROLINA |
| BG | BULLFROG AND GOLDFIELD |
| BESN | BULLS EYE SPRING NARROW GAUGE |
| BHSM | BUNKER HILL AND SULLIVAN MINING COMPANY |
| BMR | BURLINGTON AND MISSOURI RIVER |
| BN | BURLINGTON NORTHERN |
| BCRN | BURLINGTON, CEDAR RAPIDS AND NORTHERN |
| BCR | BUTTE COUNTY RAILROAD |
| BAP | BUTTE, ANACONDA AND PACIFIC |
| JLC | C.D.JOHNSON LUMBER COMPANY |
| CHCL | C.H.CLEMONS LOGGING COMPANY |
| CVY | CACHE VALLEY |
| CADC | CADDO AND CHOCTAW RAILROAD |
| CLC | CADILLAC AND LAKE CITY |
| CAD | CADIZ RAILROAD |
| CSTL | CAIRO AND ST.LOUIS RAILROAD |
| CALP | CALCASIEU PAPER COMPANY |
| COC | CALIFORNIA AND OREGON COAST |
| COL | CALIFORNIA AND OREGON LUMBER COMPANY |
| CBLC | CALIFORNIA BARREL COMPANY |
| CALC | CALIFORNIA CENTRAL |
| CDC | CALIFORNIA DOOR COMPANY |
| CNWC | CALIFORNIA NORTH WESTERN |
| CAPA | CALIFORNIA PACIFIC |
| CPGR | CALIFORNIA PEACH GROWERS RAILROAD |
| CALR | CALIFORNIA RAILWAY |
| CARC | CALIFORNIA REDWOOD COMPANY |
| CALS | CALIFORNIA SOUTHERN |
| CWR | CALIFORNIA WESTERN |
| CHM | CALUMET AND HECLA MINING |
| CI | CAMBRIA AND INDIANA |
| CARR | CAMDEN AND AMBOY RAILROAD |
| CGME | CAMDEN, GLOUCESTER AND MOUNT EPHRAIM |
| CMRL | CAMERON LUMBER COMPANY |
| CPLT | CAMINO, PLACERVILLE AND LAKE TAHOE |
| CAML | CAMPBELL LUMBER COMPANY |
| CAR | CANADA AND ATLANTIC |
| CFP | CANADIAN FOREST PRODUCTS |
| CGC | CANADIAN GYPSUM COMPANY |
| CN | CANADIAN NATIONAL |
| CPR | CANADIAN PACIFIC |
| CRYP | CANANEA, RIO YAQUI AND PACIFICO |
| CCR | CANTON AND CARTHAGE |
| CGN | CAPE GIRARDEAU NORTHERN |
| CRLC | CARLISLE LUMBER COMPANY |
| CARL | CARNATION LUMBER COMPANY |
| CSCO | CARNEGIE STEEL COMPANY |
| CANW | CAROLINA AND NORTH WESTERN |
| CASR | CAROLINA SOUTHERN RAILROAD |
| CPW | CARROLL PARK AND WESTERN |
| CCOL | CARSON AND COLORADO |
| CSCL | CASCADE LUMBER COMPANY |
| CSFE | CASPAR, SOUTH FORK & EASTERN RR |
| CSC | CASPARIS STONE COMPANY |
| CHC | CASPER & HARE CREEK |
| CSR | CASS SCENIC RAILROAD |
| CGCB | CASS, GREENBRIER, CHEAT AND BALD KNOB |
| CPRY | CASTRO POINT RAILWAY |
| CRIC | CEDAR RAPIDS AND IOWA CITY |
| CIRR | CENTRAL INDIANA |
| CGA | CENTRAL OF GEORGIA |
| CP | CENTRAL PACIFIC |
| CPLC | CENTRAL PENNSYLVANIA LUMBER COMPANY |
| CRIA | CENTRAL RAILROAD OF IOWA |
| CNE | CENTRAL RAILROAD OF NEW ENGLAND |
| CNJ | CENTRAL RAILROAD OF NEW JERSEY |
| CRPA | CENTRAL RAILROAD OF PENNSYLVANIA |
| CV | CENTRAL VERMONT |
| CSCC | CHADWICK AND SYKES CONSTRUCTION COMPANY |
| CFC | CHAMPION FIBRE COMPANY |
| CHML | CHAMPION LUMBER COMPANY |
| CRML | CHARLES R.MCCORMICK LUMBER COMPANY |
| CWC | CHARLESTON AND WESTERN CAROLINA |
| CCCG | CHARLESTON, CINCINNATI AND CHICAGO |
| CCL | CHARLESTON, CINCINNATI AND LOUISVILLE |
| CCS | CHARLESTON, CLENDENIN AND SUTTON |
| CHN | CHARLOTTE HARBOR AND NORTHERN |
| CHV | CHATTAHOOCHEE VALLEY |
| CHS | CHATTANOOGA SOUTHERN |
| CCRR | CHEHALIS AND CENTRALIA |
| CHW | CHEHALIS AND WESTERN |
| CBT | CHEROKEE BRICK AND TILE (Georgia) |
| CHIR | CHEROKEE IRON AND RAILROAD |
| CH | CHERRY AND HOMINY RAILROAD |
| CRBL | CHERRY RIVER BOOM AND LUMBER COMPANY |
| CVT | CHERRY VALLEY TIMBER COMPANY |
| CO | CHESAPEAKE AND OHIO |
| COSW | CHESAPEAKE AND OHIO SOUTHWESTERN |
| CWRR | CHESAPEAKE WESTERN |
| CPSG | CHESTER, PERRYVILLE, STE.GENEVIEVE AND FARMINGTON |
| CHR | CHESTNUT RIDGE RAILWAY |
| CA | CHICAGO AND ALTON |
| CAT | CHICAGO AND ATLANTIC |
| CEI | CHICAGO AND EASTERN ILLINOIS |
| CGT | CHICAGO AND GRAND TRUNK |
| CIM | CHICAGO AND ILLINOIS MIDLAND |
| CNW | CHICAGO AND NORTH WESTERN |
| CNP | CHICAGO AND NORTHERN PACIFIC |
| CPAC | CHICAGO AND PACIFIC |
| CCT | CHICAGO AND TERMINAL |
| CWM | CHICAGO AND WEST MICHIGAN |
| CWI | CHICAGO AND WESTERN INDIANA |
| CGW | CHICAGO GREAT WESTERN |
| CJ | CHICAGO JUNCTION RAILWAY |
| CML | CHICAGO MILL AND LUMBER |
| CSL | CHICAGO SHORT LINE |
| CAS | CHICAGO, ATTICA AND SOUTHERN |
| CBC | CHICAGO, BLUFFTON AND CINCINNATI |
| CBQ | CHICAGO, BURLINGTON AND QUINCY |
| CDV | CHICAGO, DANVILLE AND VINCENNES |
| CDM | CHICAGO, DUBUQUE AND MINNESOTA |
| CHB | CHICAGO, HARLEM AND BATAVIA |
| CIS | CHICAGO, INDIANA AND SOUTHERN (NYC) |
| CIL | CHICAGO, INDIANAPOLIS AND LOUISVILLE (MONON) |
| CKW | CHICAGO, KANSAS AND WESTERN |
| CLSE | CHICAGO, LAKE SHORE AND EASTERN |
| CLSB | CHICAGO, LAKE SHORE AND SOUTH BEND |
| CMN | CHICAGO, MADISON AND NORTHERN |
| CMG | CHICAGO, MILWAUKEE AND GARY |
| CMPS | CHICAGO, MILWAUKEE AND PUGET SOUND |
| CMSP | CHICAGO, MILWAUKEE AND ST.PAUL |
| MILW | CHICAGO, MILWAUKEE, ST.PAUL & PACIFIC |
| CNSM | CHICAGO, NORTH SHORE AND MILWAUKEE |
| COP | CHICAGO, OTTAWA AND PEORIA |
| CPSL | CHICAGO, PEORIA AND ST.LOUIS |
| CRIP | CHICAGO, ROCK ISLAND AND PACIFIC |
| CSSB | CHICAGO, SOUTH SHORE AND SOUTH BEND |
| CSSL | CHICAGO, SPRINGFIELD AND ST.LOUIS |
| CSLP | CHICAGO, ST.LOUIS AND PITTSBURGH |
| CSKC | CHICAGO, ST.PAUL AND KANSAS CITY |
| CMO | CHICAGO, ST.PAUL, MINNEAPOLIS AND OMAHA |
| CTSE | CHICAGO, TERRE HAUTE AND SOUTHEASTERN |
| CWP | CHICAGO, WEST PULLMAN AND SOUTHERN |
| CHP | CHIHUAHUA AL PACIFICO |
| CQLC | CHILOQUIN LUMBER COMPANY |
| CVRR | CHINO VALLEY |
| COG | CHOCTAW, OKLAHOMA AND GULF |
| CSSR | CHURCH STREET STATION RR CO. (ORLANDO,FL) |
| CIPR | CINCINNATI INCLINED PLANE RAILWAY |
| CSOU | CINCINNATI SOUTHERN |
| CU | CINCINNATI UNION TERMINAL |
| CHD | CINCINNATI, HAMILTON AND DAYTON |
| CIW | CINCINNATI, INDIANAPOLIS & WESTERN |
| CLN | CINCINNATI, LEBANON AND NORTHERN |
| CNTP | CINCINNATI, NEW ORLEANS AND TEXAS PACIFIC |
| CPV | CINCINNATI, PORTSMOUTH AND VIRGINIA |
| CSM | CINCINNATI, SAGINAW AND MACKINAW |
| CWMR | CINCINNATI, WABASH AND MICHIGAN |
| CNEN | CISCO AND NORTHEASTERN |
| CWH | CITY OF WINNIPEG HYDRO |
| CPRR | CLAIBORNE AND POLK RAILROAD |
| CLAM | CLAM RIVER RAILROAD |
| CLAR | CLARION RIVER |
| CLLC | CLEAR LAKE LUMBER COMPANY |
| CCCL | CLEVELAND, CINCINNATI, CHICAGO AND ST.LOUIS |
| CCCR | CLEVELAND, COLUMBUS AND CINCINNATI |
| CCCI | CLEVELAND, COLUMBUS, CINCINNATI AND INDIANAPOLIS |
| CLIF | CLIFFSIDE |
| CCO | CLINCHFIELD |
| CVL | CLOVER VALLEY LUMBER |
| CZ | COAHUILA AND ZACATECAS |
| CFR | COAL FIELDS RAILWAY |
| CPC | COAL PROCESSING CORPORATION |
| COBM | COBBS AND MITCHELL |
| CGR | COLLINS AND GLENVILLE |
| CK | COLLINS AND KREITLER |
| CONW | COLORADO AND NORTH-WESTERN |
| CS | COLORADO AND SOUTHERN |
| CW | COLORADO AND WYOMING |
| CC | COLORADO CENTRAL |
| CM | COLORADO MIDLAND |
| CNWR | COLORADO NORTH WESTERN |
| CSE | COLORADO SOUTHEASTERN |
| CSCD | COLORADO SPRINGS AND CRIPPLE CREEK DISTRICT |
| CNH | COLUMBIA AND NEHALEM |
| CPS | COLUMBIA AND PUGET SOUND |
| CRN | COLUMBIA RIVER AND NORTHERN |
| CBBR | COLUMBIA RIVER BELT LINE RAILWAY |
| CRBR | COLUMBIA RIVER BELT LINE RAILWAY |
| CNL | COLUMBIA, NEWBERRY AND LAURENS |
| CAGY | COLUMBUS AND GREENVILLE |
| CHVT | COLUMBUS, HOCKING VALLEY & TOLEDO |
| CLR | COLUSA AND LAKE RAILROAD |
| CNLC | CONASAUGA LUMBER COMPANY |
| CSLV | CONCHO, SAN SABA AND LLANO VALLEY |
| CMR | CONCORD AND MONTREAL |
| CONC | CONCORD RAILROAD |
| CBL | CONEMAUGH AND BLACK LICK |
| CRRR | CONNECTICUT RIVER RAILROAD |
| CONL | CONSOLIDATED LUMBER COMPANY |
| CSRR | CONWAY SCENIC RAILWAY |
| CCCV | COOPERSTOWN AND CHARLOTTE VALLEY |
| CB | COOS BAY LUMBER |
| CR | COPPER RANGE |
| CRNW | COPPER RIVER NORTHWESTERN RAILROAD |
| CORN | CORNWALL RAILROAD |
| BUFF | CORRIGAN MCKINNEY Co.(BUFFALO FURNACE) |
| CER | CORVALLIS AND EASTERN |
| CPAR | COUDERSPORT AND PORT ALLEGHENY |
| CBRO | COULBOURN BROTHERS |
| COWV | COWICHAN VALLEY RAILWAY |
| CCC | COWLITZ, CHEHALIS AND CASCADE |
| COER | CRAB ORCHARD AND EGYPTIAN |
| CMLC | CRAIG MOUNTAIN LUMBER COMPANY |
| CRSL | CRESCENT LOGGING COMPANY |
| CMC | CRESCENT MINING COMPANY |
| CT | CRESCENT TRAMWAY |
| CCV | CRIPPLE CREEK AND VICTOR NARROW GAUGE |
| CROF | CROFT LUMBER COMPANY |
| CRFP | CROSBY FOREST PRODUCTS |
| CLM | CROSBY LUMBER AND MANUFACTURING COMPANY |
| CRSJ | CRYSTAL RIVER AND SAN JUAN |
| CMNR | CUMBERLAND AND MANCHESTER |
| CPA | CUMBERLAND AND PENNSYLVANIA |
| CTS | CUMBRES AND TOLTEC SCENIC RAILROAD |
| CL | CUMMER LUMBER |
| CSLC | CUTLER AND SAVIDGE LUMBER COMPANY |
| CVR | CUYAHOGA VALLEY RAILWAY |
| DBD | D.B.DANIELS |
| DHML | D.H.MCEWEN LUMBER COMPANY |
| DUT | DALLAS UNION TERMINAL |
| DMM | DANVILLE AND MOUNT MORRIS |
| DW | DANVILLE AND WESTERN |
| DR | DARDANELLE AND RUSSELLVILLE |
| DOS | DARDANELLE, OLA AND SOUTHERN |
| DJLC | DAVIS JOHNSON LUMBER COMPANY |
| DAWN | DAWN TRAMWAY |
| DAYP | DAYTON POWER AND LIGHT COMPANY |
| DGC | DAYTON-GOOSE CREEK RAILWAY |
| DBCC | DE BARDELEBEN COAL COMPANY |
| DQE | DE QUEEN AND EASTERN |
| DCR | DEEP CREEK |
| DEEP | DEEP RIVER LOGGING COMPANY |
| DPLC | DEER PARK LUMBER COMPANY |
| DH | DELAWARE AND HUDSON |
| DN | DELAWARE NORTHERN |
| DLW | DELAWARE, LACKAWANNA AND WESTERN |
| DLM | DENKMANN LUMBER COMPANY |
| DENT | DENTS RUN RAILROAD |
| DRG | DENVER AND RIO GRANDE |
| DRGW | DENVER AND RIO GRANDE WESTERN |
| DSL | DENVER AND SALT LAKE |
| DNWP | DENVER NORTHWESTERN PACIFIC |
| DP | DENVER PACIFIC |
| DBW | DENVER, BOULDER AND WESTERN |
| DLG | DENVER, LEADVILLE AND GUNNISON |
| DMA | DENVER, MEMPHIS AND ATLANTIC |
| DSPP | DENVER, SOUTH PARK AND PACIFIC |
| DTFW | DENVER, TEXAS AND FORT WORTH |
| DM | DETROIT AND MACKINAC |
| DMI | DETROIT AND MICHIGAN |
| DETC | DETROIT COPPER COMPANY |
| DIS | DETROIT IRON AND STEEL |
| DCS | DETROIT, CARO AND SANDUSKY |
| DTI | DETROIT, TOLEDO AND IRONTON |
| DC | DIAMOND AND CALDOR |
| DMCO | DIAMOND MATCH COMPANY |
| DF | DIERCKS FORESTS |
| DBLC | DISCOVERY BAY LOGGING COMPANY |
| DSR | DISMAL SWAMP RAILROAD |
| DCLR | DOLBEER AND CARSON LUMBER COMPANY |
| DAR | DOMINION ATLANTIC RAILWAY |
| DD | DUBUQUE AND DAKOTA |
| DIR | DULUTH AND IRON RANGE |
| DNM | DULUTH AND NORTHERN MINNESOTA |
| DNE | DULUTH NORTHEASTERN |
| DUPT | DULUTH UNION DEPOT AND TRANSFER |
| DMIR | DULUTH, MISSABE AND IRON RANGE |
| DMIN | DULUTH, MISSABE AND NORTHERN |
| DRLW | DULUTH, RAINY LAKE AND WINNIPEG |
| DRWS | DULUTH, RED WING & SOUTHERN |
| DSSA | DULUTH, SOUTH SHORE AND ATLANTIC |
| DWP | DULUTH, WINNIPEG AND PACIFIC |
| DSNG | DURANGO AND SILVERTON NARROW GAUGE |
| DGV | DURBIN AND GREENBRIER VALLEY RAILROAD |
| DS | DURHAM AND SOUTHERN |
| EJDL | E.J.DODGE LUMBER COMPANY |
| EJL | E.J.LABINO |
| ELSM | E.L.SMITH LUMBER COMPANY |
| ELWB | EAGLE LAKE AND WEST BRANCH |
| EBL | EAST BRANCH AND LINCOLN |
| EBT | EAST BROAD TOP |
| EC | EAST CAROLINA |
| EJS | EAST JORDAN AND SOUTHERN |
| ESLC | EAST SIDE LOGGING COMPANY |
| ESLJ | EAST ST.LOUIS JUNCTION |
| ETWN | EAST TENNESSEE AND WESTERN NORTH CAROLINA |
| ETVG | EAST TENNESSEE, VIRGINIA AND GEORGIA |
| EW | EAST WASHINGTON |
| EPA | EASTERN PENNSYLVANIA RR |
| ERM | EASTERN RAILROAD OF MASSACHUSETTS |
| EDVR | EDAVILLE RAILROAD |
| EM | EDGEMOOR AND MANETTA |
| EDBC | EDMONTON, DUNVEGAN AND BRITISH COLUMBIA |
| ERE | EEL RIVER AND EUREKA |
| ERVL | EEL RIVER VALLEY LUMBER COMPANY |
| ELDL | EL DORADO LUMBER COMPANY |
| EPNE | EL PASO AND NORTHEASTERN |
| EPSW | EL PASO SOUTHWESTERN |
| ESL | ELECTRIC SHORT LINE |
| EJE | ELGIN, JOLIET AND EASTERN |
| ERCL | ELK RIVER COAL AND LUMBER COMPANY |
| ERML | ELK RIVER MILL AND LUMBER COMPANY |
| ECN | ELMIRA, CORTLAND AND NORTHERN |
| ELWL | ELWOOD LOGGING COMPANY |
| ETLC | ELY-THOMAS LUMBER COMPANY |
| ECRR | EMPIRE CITY RAILROAD (PKLC) |
| ECMR | EMPIRE COAL MINE AND RAILROAD |
| ENGL | ENGLISH LUMBER COMPANY |
| ERIE | ERIE RAILROAD |
| ER | ESCAMBIA RAILWAY |
| ELS | ESCANABA AND LAKE SUPERIOR |
| EFW | EUREKA AND FRESHWATER |
| EKR | EUREKA AND KLAMATH RIVER |
| EP | EUREKA AND PALISADE |
| EHRR | EUREKA HILL |
| EMR | EUREKA MILL RAILROAD |
| ESNA | EUREKA SPRINGS AND NORTH ARKANSAS |
| ES | EUREKA SPRINGS RAILROAD |
| EN | EUREKA-NEVADA RAILWAY |
| EUST | EUSTIS RAILROAD |
| EHN | EVANSVILLE, HENDERSON AND NASHVILLE |
| EMC | EVERETT AND MONTE CRISTO |
| EV | EVERETT RAILROAD |
| ELC | EWAUNA BOX COMPANY |
| EXRC | EXCELSIOR REDWOOD COMPANY |
| FNE | FAIRCHILD AND NORTH EASTERN |
| FPR | FARMVILLE AND POWHATTAN |
| FRIV | FEATHER RIVER RAILROAD |
| FRDN | FERDINAND |
| FCG | FERNWOOD, COLUMBIA AND GULF |
| FCH | FERRIES AND CLIFF HOUSE |
| FCP | FERROCARRIL DEL PACIFICO |
| FCI | FERROCARRIL INTEROCEANICO |
| FCM | FERROCARRIL MEXICANA |
| FNEM | FERROCARRIL NORESTE DE MEXICO |
| FUY | FERROCARRILES UNIDOS DE YUCATAN |
| FSC | FIDELITY SUGAR COMPANY |
| FFWW | FINDLAY, FORT WAYNE AND WESTERN |
| FGL | FINKBEIN-GOULD LUMBER COMPANY |
| FISH | FISH LOGGING COMPANY |
| FLC | FISHER LUMBER COMPANY |
| FHR | FISHING HAWK RAILROAD |
| FRR | FITCHBURG RAILROAD |
| FBC | FLANAGAN BROSNAN AND COMPANY |
| FLBR | FLANIGAN AND BROSNAN LUMBER COMPANY |
| FMNC | FLANIGAN AND MANNS NEWPORT COAL COMPANY |
| FN | FLEMINGSBURG AND NORTHERN |
| FPM | FLINT AND PERE MARQUETTE |
| FLLC | FLORA LOGGING COMPANY |
| FCC | FLORENCE AND CRIPPLE CREEK |
| FLOL | FLORENCE LOGGING COMPANY |
| FEC | FLORIDA EAST COAST |
| FJG | FONDA, JOHNSTOWN AND GLOVERSVILLE |
| FORD | FORD MOTOR COMPANY |
| FP | FORDYCE AND PRINCETON |
| FORL | FOREST LUMBER COMPANY |
| FBSE | FORT BRAGG AND SOUTHEASTERN RAILROAD |
| FBRR | FORT BRAGG RAILROAD |
| FDDS | FORT DODGE, DES MOINES AND SOUTHERN |
| FSW | FORT SMITH AND WESTERN |
| FSRI | FORT SMITH, SUBIACO AND ROCK ISLAND |
| FWCL | FORT WAYNE, CINCINNATI AND LOUISVILLE |
| FWWR | FORT WORTH & WESTERN |
| FWD | FORT WORTH AND DENVER |
| FWSG | FORT WORTH SAND AND GRAVEL |
| FC | FRANKFORT AND CINCINNATIF |
| FM | FRANKLIN AND MEGANTIC |
| FRED | FREDRICKSON lOGGING AND TIMBER COMPANY |
| FEVR | FREMONT AND ELKHORN VALLEY |
| FEMV | FREMONT, ELKHORN AND MISSOURI VALLEY |
| FLWB | FRENCH LICK, WEST BADEN AND SOUTHERN |
| FFLC | FRESNO FLUME AND LUMBER COMPANY |
| FGS | FRUIT GROWERS SUPPLY |
| GMR | GAINESVILLE MIDLAND RAILROAD |
| GJS | GAINESVILLE, JEFFERSON AND SOUTHERN RAILROAD |
| GGE | GALESBURG GREAT EASTERN |
| GHSA | GALVESTON, HARRISBURG AND SAN ANTONIO |
| GHH | GALVESTON, HOUSTON AND HENDERSON |
| GLS | GEORGE L.STRATTON LUMBER COMPANY |
| GCC | GEORGES CREEK AND CUMBERLAND |
| GLR | GEORGETOWN LOOP |
| GBL | GEORGETOWN, BRECKENRIDGE AND LEADVILLE |
| GAAL | GEORGIA AND ALABAMA |
| GF | GEORGIA AND FLORIDA |
| GM | GEORGIA MIDLAND |
| GANO | GEORGIA NORTHERN |
| GP | GEORGIA PACIFIC |
| GA | GEORGIA RAILROAD |
| GSF | GEORGIA SOUTHERN AND FLORIDA |
| GSG | GEORGIA SOUTHWESTERN AND GULF |
| GFA | GEORGIA, FLORIDA AND ALABAMA |
| GBN | GEORGIAN BAY AND NORTHERN |
| GETY | GETTYSBURY |
| GILT | GILPIN TRAMWAY |
| GAR | GLADYS AND ALPENA RAILROAD |
| GBRC | GLEN BLAIR REDWOOD COMPANY |
| GI | GLENDON IRON COMPANY |
| GNP | GLOBE, NEHALEM AND PACIFIC |
| GMW | GLOVER MACHINE WORKS |
| GDSR | GODCHAUX SUGAR RAILROAD |
| GRC | GOOD ROADS CONSTRUCTION COMPANY |
| GYL | GOODYEAR LUMBER COMPANY |
| GC | GRAHAM COUNTY RAILROAD |
| GCRY | GRAND CANYON RAILWAY |
| GRI | GRAND RAPIDS AND INDIANA |
| GTR | GRAND TRUNK |
| GTP | GRAND TRUNK PACIFIC |
| GTW | GRAND TRUNK WESTERN |
| GRCO | GRANITE ROCK COMPANY |
| GNA | GRAYSONIA, NASHVILLE AND ASHDOWN |
| GN | GREAT NORTHERN |
| GSM | GREAT SMOKY MOUNTAIN |
| GSLC | GREAT SOUTHERN LUMBER COMPANY |
| GW | GREAT WESTERN |
| GWR | GREAT WESTERN OF CANADA |
| GBPL | GREEN BAY AND PEPIN LAKE RAILWAY |
| GBW | GREEN BAY AND WESTERN |
| GWSP | GREEN BAY, WINONA AND ST.PAUL |
| GMRR | GREEN MOUNTAIN RAILROAD |
| GER | GREENBRIER AND ELK RIVER |
| GCE | GREENBRIER, CHEAT AND ELK |
| GNRR | GREENFIELD AND NORTHERN |
| GJ | GREENWICH AND JOHNSONVILLE |
| GR | GREENWOOD (CA) RAILROAD |
| GFC | GROVE FARM COMPANY |
| GMC | GUALALA MILL COMPANY |
| GCSF | GULF COAST AND SANTA FE |
| GMN | GULF, MOBILE AND NORTHERN |
| GMO | GULF, MOBILE AND OHIO |
| GTWR | GULF, TEXAS AND WESTERN |
| HCF | H.C.FRICK COKE COMPANY |
| HDWC | H.D.WILLIAMS COOPERAGE |
| HKC | H.KALBACH AND COMPANY |
| HWR | H.W.REED AND SONS |
| HAMA | HAMA HAMA LOGGING COMPANY |
| HLRR | HAMMOND AND LITTLE RIVER LOGGING COMPANY |
| HMLC | HAMMOND LUMBER COMPANY |
| HB | HAMPTON AND BRANCHVILLE |
| HSJ | HANNIBAL AND ST.JOSEPH |
| HBRR | HANOVER BRANCH RAILROAD |
| HSR | HARBOR SPRINGS RAILROAD |
| HW | HARDWICK AND WOODBURY RAILROAD |
| HH | HART AND HORNING |
| HCSR | HART COUNTY SCENIC RAILROAD |
| HCW | HARTFORD AND CONNECTICUT WESTERN |
| HSLC | HASSINGER LUMBER COMPANY |
| HCR | HAWAII CONSOLIDATED RAILWAY |
| HRY | HAWAII RAILWAY |
| HMC | HAWAIIAN MAHOGANY COMPANY |
| HFS | HAWKINSVILLE AND FLORIDA SOUTHERN |
| HVR | HEBER VALLEY |
| HTL | HECLA AND TORCH LAKE |
| HNW | HELENA & NORTHWESTERN |
| HC | HEMLOCK CENTRAL |
| HHRR | HETCH HETCHY RAILROAD |
| HPTD | HIGH POINT, THOMASVILLE AND DENTON |
| HLL | HILLCREST LUMBER LTD |
| HBLR | HILLIARD & BAILEYS LUMBER RAILROAD |
| HNE | HILLSBORO NORTHEASTERN |
| HILO | HILO RAILROAD |
| HHL | HIMMELBERGER-HARRISON LUMBER |
| HS | HOBART SOUTHERN |
| HWC | HOBBS, WALL & COMPANY |
| HOBI | HOBI TIMBER COMPANY |
| HM | HOBOKEN MANUFACTURERS |
| HV | HOCKING VALLEY |
| HVT | HOCKING VALLEY AND TOLEDO |
| HRA | HOLLY RIVER AND ADDISON |
| HELC | HOLMES EUREKA LOGGING COMPANY |
| HOLV | HOLSTON VALLEY RAILROAD |
| HOLT | HOLT LUMBER COMPANY |
| HSMC | HOMESTAKE MINING COMPANY |
| HMCH | HOMO CHITTO LUMBER COMPANY |
| HYT | HOOPPOLE, YORKTOWN AND TAMPICO |
| HTW | HOOSAC TUNNEL AND WILMINGTON |
| HSP | HOT SPRINGS RAILROAD |
| HRR | HOUSATONIC RAILROAD |
| HBV | HOUSTON AND BRAZOS VALLEY |
| HTC | HOUSTON AND TEXAS CENTRAL |
| HBLT | HOUSTON BELT AND TERMINAL |
| HEWT | HOUSTON EAST AND WEST TEXAS |
| HCLC | HOWARD CREEK LUMBER COMPANY |
| HT | HOWARD TERMINAL |
| HUCK | HUCKLEBERRY |
| HCWR | HULL, CHELSEA AND WAKEFIELD |
| HUML | HUMBIRD LUMBER COMPANY |
| HMR | HUMBOLDT AND MAD RIVER |
| HBJ | HUMBOLDT BAY JETTY RAILROAD |
| HLOG | HUMBOLDT LOGGING |
| HLMC | HUMBOLDT LUMBER MILL COMPANY |
| HNRY | HUMBOLDT NORTHERN RAILROAD |
| HBLC | HUME AND BENNETT LUMBER COMPANY |
| HBT | HUNTINGDON AND BROAD TOP MOUNTAIN |
| HLC | HUTCHINSON LUMBER COMPANY |
| IWN | IDAHO AND WASHINGTON NORTHERN |
| IC | ILLINOIS CENTRAL RAILROAD |
| IM | ILLINOIS MIDLAND |
| ITC | ILLINOIS TERMINAL COMPANY |
| ITS | ILLINOIS TRACTION SYSTEM |
| IRN | ILWACO RAILWAY AND NAVIGATION COMPANY |
| INM | INDEPENDENCE AND MONMOUTH |
| INDL | INDEPENDENCE LOGGING COMPANY |
| IHB | INDIANA HARBOR BELT |
| IN | INDIANA NORTHERN |
| IDW | INDIANA, DECATUR AND WESTERN |
| IB | INDIANAPOLIS AND BELLEFONTAINE |
| IU | INDIANAPOLIS UNION RAILWAY |
| IDLC | INGRAM-DAY LUMBER COMPANY |
| INLS | INLAND STEEL COMPANY |
| ICCC | INSPIRATION CONSOLIDATED COPPER COMPANY |
| ILC | INSULAR LUMBER COMPANY |
| IUR | INTER-URBAN RAILWAY |
| ICR | INTERCONTINENTAL RAILWAY |
| IMCL | INTERMOUNTAIN COAL AND LUMBER COMPANY |
| IMTN | INTERMOUNTAIN RAILWAY |
| IGN | INTERNATIONAL GREAT NORTHERN |
| INTT | INTERNATIONAL TIMBER COMPANY |
| INT | INTERSTATE |
| INR | IOLA AND NORTHERN RAILROAD |
| IE | IONE AND EASTERN |
| IAC | IOWA CENTRAL |
| ICL | IRON CITY LUMBER COMPANY |
| IRON | IRONTON RAILROAD |
| JAVL | J.A.VENESS LUMBER COMPANY |
| JBML | J.B.MILLER LOGGING COMPANY |
| JHC | J.H.CHAMBERS COMPANY |
| JMP | J.M.PAINE AND COMPANY |
| JNLC | J.NEILS LUMBER COMPANY |
| JSRC | JACKSON SOUTHERN |
| JH | JACKSONVILLE AND HAVANA |
| JNSE | JACKSONVILLE NORTHWESTERN AND SOUTHEASTERN |
| JSE | JACKSONVILLE SOUTHEASTERN |
| JTR | JACKSONVILLE TERMINAL RAILWAY |
| JTKW | JACKSONVILLE, TAMPA AND KEY WEST |
| JSL | JAMES STRONG LUMBER COMPANY |
| JWNW | JAMESTOWN, WESTFIELD AND NORTHWESTERN |
| JMI | JEFFERSONVILLE, MADISON AND INDIANAPOLIS |
| JJCC | JOHN J.CRAIG COMPANY (MARBLE QUARRY) |
| JSTP | JOHN STUPPLEFIELD |
| KW | KAHULUI AND WAILUKU RAILROAD |
| KRRC | KAHULUI RAILROAD |
| KMRR | KANAWHA AND MICHIGAN |
| KE | KANE AND ELK RAILROAD |
| KOF | KANE OIL FIELD RAILROAD |
| KPRR | KANONA AND PRATTSBURGH |
| KGSL | KANSAS AND GULF SHORT LINE |
| KO | KANSAS AND OKLAHOMA |
| KSR | KANSAS AND SIDELL RAILROAD |
| KCO | KANSAS CITY AND OMAHA |
| KCNW | KANSAS CITY NORTH-WESTERN |
| KCS | KANSAS CITY SOUTHERN |
| KCT | KANSAS CITY TERMINAL |
| KCFM | KANSAS CITY, FORT SCOTT AND MEMPHIS |
| KCFS | KANSAS CITY, FORT SMITH AND SOUTHERN |
| KCMO | KANSAS CITY, MEXICO AND ORIENT |
| KCOS | KANSAS CITY, OSCEOLA AND SOUTHERN |
| KCPG | KANSAS CITY, PITTSBURG AND GULF |
| KCSJ | KANSAS CITY, ST.JOSEPH AND COUNCIL BLUFFS |
| KCWM | KANSAS CITY, WYANDOTTE AND NORTH WESTERN |
| KP | KANSAS PACIFIC |
| KOG | KANSAS, OKLAHOMA AND GULF |
| KS | KASLO AND SLOCAN |
| KH | KAUL AND HALL LUMBER COMPANY |
| KAUL | KAUL LUMBER COMPANY |
| KBH | KEARNEY AND BLACK HILLS |
| KILT | KELLEY ISLAND LIME AND TRANSPORT |
| KNBC | KENNEBEC CENTRAL |
| KT | KENTUCKY AND TENNESSEE |
| KCR | KENTUCKY CENTRAL RAILROAD |
| KIT | KENTUCKY INDIANA TERMINAL |
| KERR | KENTWOOD AND EASTERN RAILROAD |
| KEOW | KEOKUK AND WESTERN |
| KMR | KETTLE MORAINE RAILWAY (WISCONSIN) |
| KGBW | KEWAUNEE, GREEN BAY AND WESTERN |
| KEYS | KEYSTONE RAILROAD |
| KPM | KINZUA PINE MILLS |
| KLC | KIRBY LUMBER COMPANY (TEXAS) |
| KV | KISHACOQUILLAS VALLEY RAILROAD |
| KHV | KLAMATH AND HOPPOW VALLEY |
| KLR | KLAMATH LAKE RAILROAD |
| KLL | KLICKITAT LOGGING AND LUMBER |
| KM | KLONDIKE MINES |
| KK | KNOX AND KANE RAILROAD |
| KTC | KOSMOS TIMBER COMPANY |
| LEW | L.E.WHITE LUMBER COMPANY |
| LSWN | LA CROSSE AND SOUTHWESTERN |
| LMLT | LA MOINE LUMBER AND TRADING COMPANY |
| LBR | LACKAWANNA AND BLOOMSBURG RAILROAD |
| LWV | LACKAWANNA AND WYOMING VALLEY |
| LKP | LAHAINA, KAANAPALI AND PACIFIC |
| LEW | LAKE ERIE AND WESTERN |
| LILC | LAKE INDEPENDENCE LUMBER COMPANY |
| LSMS | LAKE SHORE AND MICHIGAN SOUTHERN |
| LSER | LAKE STREET ELEVATED RAILROAD |
| LSI | LAKE SUPERIOR AND ISHPEMING |
| LSM | LAKE SUPERIOR AND MISSISSIPPI |
| LSTT | LAKE SUPERIOR TERMINAL TRANSFER |
| LSIC | LAKE SUPERIOR, ISHPEMING AND CALUMET |
| LTRT | LAKE TAHOE RAILROAD AND TRANSPORTATION |
| LWLC | LAKE WHATCOM LOGGING COMPANY |
| LAMS | LAMSON LOGGING COMPANY |
| LOS | LANCASTER, OXFORD AND SOUTHERN |
| LNR | LAONA AND NORTHERN |
| LLC | LAQUIN LUMBER COMPANY |
| LNPW | LARAMIE, NORTH PARK AND WESTERN |
| LG | LARSON AND GREENOUGH |
| LLBC | LASSEN LUMBER AND BOX COMPANY |
| LNWR | LAUREL AND NORTHWESTERN RAILWAY |
| LTW | LAUREL AND TALLAHOMA WESTERN RAILWAY |
| LFSH | LAUREL FORK AND SAND HILL |
| LH | LAUREL HIGHLANDS |
| LRHS | LAUREL RIVER AND HOT SPRINGS RAILROAD |
| LRT | LAWNDALE RAILWAY & TRANSPORTATION |
| LLG | LAWRENCE, LEAVENWORTH AND GALVESTON |
| LKW | LEAVENWORTH, KANSAS AND WESTERN |
| LHR | LEHIGH AND HUDSON RIVER |
| LMR | LEHIGH AND MAHONING |
| LNE | LEHIGH AND NEW ENGLAND |
| LCN | LEHIGH COAL AND NAVIGATION COMPANY |
| LNCC | LEHIGH NAVIGATION COAL COMPANY |
| LV | LEHIGH VALLEY |
| LMLC | LEONA MILLS LUMBER COMPANY |
| LSPS | LEVERT-ST.JOHN PLANTATION AND SUGAR FACTORY |
| LIG | LIGONIER |
| LIMA | LIMA LOCOMOTIVE WORKS |
| LM | LITCHFIELD AND MADISON |
| LBC | LITTLE BOOK CLIFF |
| LMIA | LITTLE MIAMI |
| LR | LITTLE RIVER |
| LRRL | LITTLE RIVER REDWOOD COMPANY |
| LOPG | LIVE OAK, PERRY AND GULF |
| LAL | LIVONIA, AVON AND LAKEVILLE |
| LBMC | LOBDELL AND BAILEY MANUFACTURING COMPANY |
| LMS | LONDON MIDLAND AND SCOTTISH |
| LI | LONG ISLAND |
| LBLC | LONG-BELL LUMBER COMPANY |
| LPN | LONGVIEW, PORTLAND AND NORTHERN |
| LASL | LOS ANGELES AND SALT LAKE |
| LAHB | LOS ANGELES HARBOR BELT |
| LAOH | LOS ANGELES OUTER HARBOR TERMINAL |
| LAP | LOS ANGELES PACIFIC |
| LA | LOUISIANA AND ARKANSAS |
| LAT | LOUISIANA AND ARKANSAS OF TEXAS |
| LCLC | LOUISIANA CYPRESS LUMBER |
| LE | LOUISIANA EASTERN |
| LLL | LOUISIANA LONGLEAF LUMBER COMPANY |
| LMRR | LOUISIANA MIDLAND RAILROAD |
| LNW | LOUISIANA NORTHWESTERN |
| LRN | LOUISIANA RAILWAY & NAVIGATION |
| LS | LOUISIANA SOUTHERN |
| LWR | LOUISIANA WESTERN RAILROAD |
| LAR | LOUISVILLE AND ATLANTIC |
| LJBR | LOUISVILLE AND JEFFERSONVILLE BRIDGE |
| LN | LOUISVILLE AND NASHVILLE |
| LW | LOUISVILLE AND WADLEY |
| LESC | LOUISVILLE, EVANSVILLE AND ST.LOUIS CONSOLIDATED |
| LHSL | LOUISVILLE, HENDERSON AND ST.LOUIS |
| LNAC | LOUISVILLE, NEW ALBANY & CORYDON |
| LNC | LOUISVILLE, NEW ALBANY AND CHICAGO |
| LBRR | LOWVILLE AND BEAVER RIVER |
| LUDL | LUDINGTON LUMBER COMPANY |
| LYEB | LYE BROOK RAILROAD |
| LTC | LYMAN TIMBER COMPANY |
| MACB | MACMILLAN AND BLOEDEL |
| MBPR | MACMILLAN, BLOEDEL AND POWELL RIVER |
| MBR | MACON AND BIRMINGHAM |
| MDS | MACON, DUBLIN & SAVANNAH |
| MSPL | MADERA SUGAR PINE LUMBER COMPANY |
| MAA | MAGMA ARIZONA |
| MS | MAHONEY AND SWANSON |
| MOSC | MAHONING ORE AND STEEL COMPANY |
| MEC | MAINE CENTRAL |
| MEL | MAINE LOGGING COMPANY |
| MCVR | MAMMOTH CAVE RAILROAD |
| MNO | MANCHESTER AND ONEIDA |
| MELR | MANHATTAN ELEVATED RAILROAD |
| MNE | MANISTEE AND NORTH EASTERN |
| MPP | MANITOU AND PIKES PEAK |
| MCRY | MANNS CREEK RAILWAY |
| MRT | MANSFIELD RAILWAY AND TRANSPORTATION COMPANY |
| MTW | MARINETTE, TOMAHAWK AND WESTERN |
| MRV | MARION AND RYE VALLEY |
| MRCR | MARION RIVER CARRY RAILROAD |
| MCRP | MARITIME COAL, RAILWAY & POWER CO |
| MHM | MARQUETTE AND HURON MOUNTAIN |
| MHO | MARQUETTE, HOUGHTON AND ONTANAGON |
| MVR | MARTHAS VINEYARD RAILROAD |
| MDSC | MARYLAND AND DELAWARE SEACOAST |
| MPA | MARYLAND AND PENNSYLVANIA |
| MOC | MASON AND OCEANA RAILROAD |
| MCLC | MASON COUNTY LOGGING COMPANY |
| MSTN | MASTEN LOGGING COMPANY |
| MATT | MATTAGAMI RAILROAD |
| MATL | MATTOLE LUMBER COMPANY |
| MAYC | MAY CREEK LOGGING COMPANY |
| MAYO | MAYO LUMBER COMPANY |
| MYLC | MAYTON LUMBER COMPANY |
| MCR | MCCLOUD RIVER RAILROAD |
| MCDM | MCDONALD-MURPHY LUMBER COMPANY |
| MCKY | MCKAY AND COMPANY |
| MMTN | MEADOW MOUNTAIN LUMBER COMPANY |
| MRLC | MEADOW RIVER LUMBER COMPANY |
| MEDF | MEDFORD CORPORATION RAILROAD |
| MPGR | MEMPHIS, PARIS AND GULF |
| MLC | MENDOCINO LUMBER COMPANY |
| MIM | MENOMINEE INDIAN MILLS |
| MIRR | MENOMINEE INDIAN RESERVATION RAILROAD |
| MBRR | MERIDIAN AND BIGBEE RIVER |
| MERL | MERIDIAN LUMBER COMPANY |
| MRNG | MERRILL AND RING LUMBER |
| MRL | METROPOLITAN REDWOOD LUMBER COMPANY |
| MC | MICHIGAN CENTRAL |
| MLCC | MICHIGAN LIME AND CHEMICAL COMPANY |
| MSNI | MICHIGAN SOUTHERN AND NORTHERN INDIANA |
| MCL | MICHIGAN-CALIFORNIA LUMBER COMPANY |
| MCRM | MID-CONTINENT RAILWAY MUSEUM |
| MF | MIDDLE FORK RAILROAD |
| MURR | MIDDLETOWN AND UNIONVILLE |
| MDCR | MIDLAND CONTINENTAL RAILROAD |
| MECC | MIDLAND ELECTRIC COAL COMPANY |
| MPR | MIDLAND PACIFIC RAILWAY |
| MRC | MIDLAND RAILWAY OF CANADA |
| MT | MIDLAND TERMINAL |
| MV | MIDLAND VALLEY |
| MVMT | MILL VALLEY AND MOUNT TAMALPAIS |
| MILS | MILSTEAD RAILROAD |
| MLTN | MILTON CREEK LOGGING COMPANY |
| MSTP | MILWAUKEE AND ST.PAUL |
| MILC | MILWAUKEE LUMBER COMPANY |
| MLSW | MILWAUKEE, LAKE SHORE AND WESTERN |
| MRSW | MILWAUKEE, ROCKFORD AND SOUTHWESTERN |
| MWLC | MINARETS AND WESTERN |
| MHR | MINE HILL RAILROAD |
| MMPA | MINERA MEXICANA PENOLES AVALOS |
| MR | MINERAL RANGE |
| MRR | MINNEAPOLIS AND RAINY RIVER |
| MSTL | MINNEAPOLIS AND ST.LOUIS |
| MERR | MINNEAPOLIS EASTERN |
| MLLC | MINNEAPOLIS, LYNDALE AND LAKE CALHOUN |
| MNS | MINNEAPOLIS, NORTHFIELD AND SOUTHERN |
| MSMA | MINNEAPOLIS, SAULT STE.MARIE AND ATLANTIC |
| SOO | MINNEAPOLIS, ST.PAUL AND SAULT STE.MARIE |
| MSRD | MINNEAPOLIS, ST.PAUL, ROCHESTER AND DUBUQUE |
| MNW | MINNESOTA AND NORTHWESTERN |
| MTR | MINNESOTA TRANSFER RAILWAY |
| MNV | MINNESOTA VALLEY |
| MW | MINNESOTA WESTERN |
| MML | MINOR MILL AND LUMBER COMPANY |
| MISH | MISHLER LUMBER COMPANY |
| MSAL | MISSISSIPPI AND ALABAMA |
| MSW | MISSISSIPPI AND WESTERN |
| MSC | MISSISSIPPI CENTRAL |
| MRBT | MISSISSIPPI RIVER AND BONNE TERRE |
| MISS | MISSISSIPPIAN RAILROAD |
| MA | MISSOURI AND ARKANSAS |
| MNA | MISSOURI AND NORTH ARKANSAS |
| MP | MISSOURI PACIFIC |
| MOSO | MISSOURI SOUTHERN |
| MIN | MISSOURI, IOWA AND NEBRASKA |
| MOG | MISSOURI, OKLAHOMA AND GULF |
| MI | MISSOURI-ILLINOIS RAILROAD |
| MKT | MISSOURI-KANSAS-TEXAS |
| MB | MITCHELL BROTHERS |
| MG | MOBILE AND GULF |
| MO | MOBILE AND OHIO |
| MET | MODESTO AND EMPIRE TRACTION |
| MNR | MOJAVE NORTHERN RAILROAD |
| CIL | MONON (CHICAGO, INDIANAPOLIS AND LOUISVILLE) |
| MONG | MONONGAHELA RAILROAD |
| MCRD | MONONGALIA COUNTY ROAD DEPARTMENT |
| MONL | MONROE LOGGING COMPANY |
| MON | MONSON RAILROAD |
| MTUR | MONTANA UNION RAILWAY |
| MWS | MONTANA, WYOMING AND SOUTHERN |
| MWR | MONTPELIER AND WELLS RIVER |
| MMLC | MOORE MILL AND LUMBER COMPANY |
| MNF | MOREHEAD AND NORTH FORK |
| MLT | MORGANS LOUISIANA AND TEXAS |
| ME | MORRIS AND ESSEX |
| MER | MORRISTOWN AND ERIE |
| MCSA | MOSCOW, CAMDEN AND SAN AUGUSTINE |
| MOV | MOSHASSUCK VALLEY |
| MM | MOSHER AND MCDONALD |
| MCCR | MOSQUITO AND COAL CREEK |
| MELC | MOUNT EMILY LUMBER COMPANY |
| MGNG | MOUNT GRETNA NARROW GAUGE RAILROAD |
| MH | MOUNT HOOD RAILROAD |
| MJKR | MOUNT JEWETT, KINZUA AND RITERVILLE |
| MPG | MOUNT PENN GRAVITY |
| MRSR | MOUNT RAINIER SCENIC RAILROAD |
| MSPC | MOUNT SHASTA POWER CORPORATION |
| MTSR | MOUNT SICKER RAILWAY |
| MTMW | MOUNT TAMALPAIS AND MUIR WOODS |
| MWCR | MOUNT WASHINGTON COG RAILROAD |
| MOW | MOWER LUMBER COMPANY |
| MBL | MUD BAY LOGGING |
| MNSW | MURFREESBORO-NASHVILLE SOUTHWESTERN |
| MLCR | MUSKRAT LAKE AND CLAM RIVER |
| MMC | MUTUAL MINING COMPANY |
| NAN | NANTUCKET RAILROAD |
| NPR | NARRAGANSETT PIER RAILROAD |
| NCSL | NASHVILLE, CHATTANOOGA AND ST.LOUIS |
| NLC | NATALBANY LUMBER COMPANY |
| NTZS | NATCHEZ AND SOUTHERN |
| NCM | NATCHEZ, COLUMBIA AND MOBILE RAILROAD |
| NHB | NATIONAL HARBOURS BOARD |
| NLM | NATIONAL LUMBER AND MANUFACTURING COMPANY |
| NDM | NATIONAL RAILWAYS OF MEXICO |
| NAVL | NAVARRO LUMBER COMPANY |
| NA | NELSON AND ALBEMARLE |
| NNLC | NELSON-NEAL LUMBER COMPANY |
| NCR | NEVADA CENTRAL |
| NCCC | NEVADA CONSOLIDATED COPPER |
| NCB | NEVADA COPPER BELT |
| NCNG | NEVADA COUNTY NARROW GAUGE |
| NN | NEVADA NORTHERN |
| NVSL | NEVADA SHORT LINE |
| NCO | NEVADA-CALIFORNIA-OREGON |
| NAS | NEW ALBANY AND SALEM |
| NEFT | NEW ENGLAND FUEL AND TERMINAL |
| NELC | NEW ENGLAND LIME COMPANY |
| NHNL | NEW HAVEN, NEW LONDON & STONINGTON |
| NHI | NEW HOPE AND IVYLAND |
| NHSR | NEW HOPE STEAM RAILWAY AND MUSEUM |
| NJNY | NEW JERSEY AND NEW YORK |
| NJM | NEW JERSEY MIDLAND |
| NJRT | NEW JERSEY RAILROAD AND TRANSPORTATION |
| NLN | NEW LONDON NORTHERN |
| NMSP | NEW MEXICO AND SOUTHERN PACIFIC |
| NMLC | NEW MEXICO LUMBER COMPANY |
| NMRC | NEW MEXICO RAILWAY AND COAL COMPANY |
| NOGC | NEW ORLEANS AND GULF COAST |
| NOGN | NEW ORLEANS GREAT NORTHERN |
| NONE | NEW ORLEANS NORTHEASTERN |
| NOP | NEW ORLEANS PACIFIC |
| NOPB | NEW ORLEANS PUBLIC BELT |
| NOOG | NEW ORLEANS, OPELOUSAS AND GREAT WESTERN |
| NOTM | NEW ORLEANS, TEXAS AND MEXICO |
| NYOM | NEW YORK & OSWEGO MIDLAND |
| NYE | NEW YORK AND ERIE |
| NYGL | NEW YORK AND GREENWOOD LAKE |
| NYLE | NEW YORK AND LAKE ERIE RAILROAD |
| NYNE | NEW YORK AND NEW ENGLAND |
| NYNH | NEW YORK AND NEW HAVEN |
| NYPA | NEW YORK AND PENNSYLVANIA COMPANY |
| NYPR | NEW YORK AND PENNSYLVANIA REDWOOD COMPANY |
| NYSB | NEW YORK AND SEA BEACH |
| NYC | NEW YORK CENTRAL |
| NYHR | NEW YORK CENTRAL AND HUDSON RIVER |
| NYD | NEW YORK DOCK |
| NYER | NEW YORK ELEVATED |
| NYAL | NEW YORK, AUBURN AND LANSING |
| NKP | NEW YORK, CHICAGO AND ST.LOUIS |
| NH | NEW YORK, NEW HAVEN AND HARTFORD |
| NYOW | NEW YORK, ONTARIO AND WESTERN |
| NYPN | NEW YORK, PHILADELPHIA AND NORFOLK |
| NYPB | NEW YORK, PROVIDENCE AND BOSTON |
| NYSW | NEW YORK, SUSQUEHANNA AND WESTERN |
| NYWS | NEW YORK, WEST SHORE AND BOSTON |
| NVRR | NEWAUKUM VALLEY RAILROAD |
| NSS | NEWBURGH AND SOUTH SHORE |
| NDC | NEWBURGH, DUTCHESS AND CONNECTICUT |
| NFLD | NEWFOUNDLAND RAILWAY |
| NZP | NEZ PERCE RAILROAD |
| NCLC | NICHOLS-CHISOLM LUMBER COMPANY |
| NNL | NILES AND NEW LISBON |
| NCY | NILES CANYON RAILWAY |
| NLT | NOLAND LAND AND TRANSFER COMPANY |
| NPBL | NORFOLK AND PORTSMOUTH BELT LINE |
| NW | NORFOLK AND WESTERN |
| NNY | NORFOLK NAVY YARD |
| NS | NORFOLK SOUTHERN |
| NFD | NORFOLK, FRANKLIN AND DANVILLE |
| NATT | NORTH AMERICA TRANSPORTATION AND TRADING COMPANY |
| NFLC | NORTH FORK LUMBER COMPANY |
| NMOR | NORTH MISSOURI |
| NPC | NORTH PACIFIC COAST |
| NSRR | NORTH SHORE RAILROAD |
| NWL | NORTH WESTERN LOGGING |
| NWIS | NORTH WISCONSIN RAILROAD |
| NAR | NORTHERN ALBERTA RAILWAYS |
| NNW | NORTHERN AND NORTHWESTERN RAILWAY |
| NC | NORTHERN CENTRAL |
| NP | NORTHERN PACIFIC |
| NPT | NORTHERN PACIFIC TERMINAL |
| NRL | NORTHERN REDWOOD LUMBER COMPANY |
| NWLC | NORTHWEST LUMBER COMPANY |
| NWP | NORTHWESTERN PACIFIC |
| NSL | NORWOOD AND ST.LAWRENCE |
| ORL | OAHU RAILWAY & LAND COMPANY |
| OPPL | OAK POINT PILING AND LUMBER COMPANY |
| OSR | OCEAN SHORE RAILROAD |
| OLC | OGDENSBURG AND LAKE CHAMPLAIN |
| OMSG | OHIO AND MICHIGAN SAND AND GRAVEL COMPANY |
| OCE | OHIO CENTRAL |
| ORW | OHIO RIVER AND WESTERN |
| OCA | OIL CREEK AND ALLEGHENY |
| OCR | OIL CREEK RAILROAD |
| OKPC | OKLAHOMA PORTLAND CEMENT COMPANY |
| OKN | OKMULGEE NORTHERN |
| OC | OLD COLONY RAILROAD |
| ORK | OLD RIVER AND KISSATCHIE |
| OSC | OLD SYDNEY COLLERIES |
| OIM | OLIVER IRON MINING COMPANY |
| OW | ONEIDA AND WESTERN |
| ONT | ONTARIO NORTHLAND |
| OSH | ONTARIO, SIMCOE AND HURON |
| OA | ORANGE AND ALEXANDRIA |
| OALC | OREGON AMERICAN LUMBER COMPANY |
| OCRR | OREGON AND CALIFORNIA |
| OE | OREGON AND EASTERN |
| OERR | OREGON AND EUREKA |
| ONWR | OREGON AND NORTH WESTERN |
| OPE | OREGON PACIFIC AND EASTERN |
| ORN | OREGON RAILWAY AND NAVIGATION COMPANY |
| OSL | OREGON SHORT LINE |
| OSUN | OREGON SHORT LINE AND UTAH NORTHERN |
| OSE | OREGON SOUTHEASTERN |
| OWRN | OREGON WASHINGTON RAILWAY AND NAVIGATION |
| ORY | OREGONIAN RAILWAY |
| OR | OSAGE RAILROAD |
| OBWC | OSBORN BAY AND WHARF CAMPANY |
| ORTC | OSTRANDER RAILWAY AND TIMBER COMPANY |
| OCBL | OTTER CREEK BOOM AND LUMBER COMPANY |
| ONW | OUACHITA AND NORTH WESTERN |
| OHB | OUTER HARBOR BELT |
| OZTC | OZETTE LUMBER COMPANY |
| PBE | P.B AND E. (UNIDENTIFIED) |
| PC | PACIFIC COAST |
| PCNG | PACIFIC COAST NARROW GAUGE |
| PCT | PACIFIC COAST TERMINAL |
| PGE | PACIFIC GREAT EASTERN |
| PPC | PACIFIC PORTLAND CEMENT COMPANY |
| PRM | PACIFIC RAILROAD OF MISSOURI |
| PRN | PACIFIC RAILWAY AND NAVIGATION COMPANY |
| PWC | PACIFIC WHITE CEDAR |
| PLCL | PAINE LUMBER COMPANY LTD. |
| PVC | PAJARO VALLEY CONSOLIDATED RAILROAD |
| PLBY | PALMER-LIBBY COMPANY |
| PAN | PANAMA RR |
| PCLC | PARDEE AND CURTIN LUMBER COMPANY |
| PMP | PARIS AND MOUNT PLEASANT |
| PPM | PARIS AND PERE MARQUETTE RAILROAD |
| POC | PARK AND OCEAN |
| PKBM | PARKERSBURG MILL COMPANY |
| PPL | PARSONS PULP AND LUMBER COMPANY |
| PAWN | PAWNEE |
| PLR | PEARL AND LEAF RIVER |
| PRVL | PEARL RIVER VALLEY LUMBER |
| PWLC | PEAVEY-WILSON LUMBER COMPANY |
| PVNE | PECOS VALLEY AND NORTH-EASTERN |
| PT | PENINSULA TERMINAL |
| PEN | PENINSULAR RAILWAY |
| PRR | PENNSYLVANIA |
| PNY | PENNSYLVANIA AND NEW YORK |
| PPLC | PENNSYLVANIA POWER AND LIGHT COMPANY |
| PRSL | PENNSYLVANIA-READING SEASHORE LINES |
| PE | PEORIA AND EASTERN |
| PPU | PEORIA AND PEKIN UNION |
| PTC | PEORIA TERMINAL COMPANY |
| PPJ | PEORIA, PEKIN AND JACKSONVILLE |
| PM | PERE MARQUETTE |
| PRDG | PHILADELPHIA & READING |
| PCR | PHILADELPHIA AND COLUMBIA |
| PBW | PHILADELPHIA, BALTIMORE AND WASHINGTON |
| PR | PHILLIPS AND RANGELEY |
| PERR | PHOENIX AND EASTERN RAILROAD |
| PHLC | PHOENIX LUMBER COMPANY |
| PA | PICKENS AND ADDISON RAILROAD |
| PKLC | PICKERING LUMBER COMPANY |
| PRNW | PIERRE, RAPID CITY AND NORTHWESTERN |
| PRLC | PINE RIDGE LUMBER COMPANY |
| PRSP | PINE RIVER AND STEVENS POINT |
| PTMC | PINE TREE MANUFACTURING COMPANY |
| PHM | PIQUA HANDLE AND MANUFACTURING COMPANY |
| PS | PITTSBURG AND SHAWMUT |
| PSN | PITTSBURG, SHAWMUT AND NORTHERN |
| PLE | PITTSBURGH AND LAKE ERIE |
| PWV | PITTSBURGH AND WEST VIRGINIA |
| PWR | PITTSBURGH AND WESTERN |
| PAMR | PITTSBURGH, ALLEGHENY AND MCKEES ROCKS |
| PBLE | PITTSBURGH, BESSEMER AND LAKE ERIE |
| PCY | PITTSBURGH, CHARTIERS AND YOUGHIOGHENY |
| PCSL | PITTSBURGH, CINCINNATI AND ST.LOUIS |
| PCCS | PITTSBURGH, CINCINNATI, CLEVELAND AND ST.LOUIS |
| PFWC | PITTSBURGH, FORT WAYNE AND CHICAGO |
| PMKY | PITTSBURGH, MCKEESPORT & YOUGHIOGHENY |
| PWS | PITTSBURGH, WESTMORELAND AND SOMERSET |
| PATF | POINT ARENA TIE AND FLUMING COMPANY |
| PLC | POLSON LOGGING COMPANY |
| PEVR | PORT EVERGLADES |
| PGH | PORT OF GRAYS HARBOR |
| PO | PORTLAND AND OGDENSBURG |
| PRCH | PORTLAND AND ROCHESTER |
| PRLP | PORTLAND RAILWAY, LIGHT AND POWER COMPANY |
| PEE | PORTLAND, EUGENE AND EASTERN |
| PL | POTLATCH LUMBER |
| PFP | POTOMAC, FREDERICKSBURG AND PIEDMONT |
| PER | PRESCOTT & EASTERN |
| PNW | PRESCOTT AND NORTHWESTERN |
| PRES | PRESTON RAILROAD |
| PEIR | PRINCE EDWARD RAILWAY |
| PPCI | PROSPECT PARK AND CONEY ISLAND |
| PW | PROVIDENCE AND WORCESTER |
| PSSV | PUGET SOUND & SNOQUALMIE VALLEY |
| PULL | PULLMAN RAILROAD |
| QB | QUAKERTOWN AND BETHLEHEM |
| QAP | QUANAH, ACME AND PACIFIC |
| QC | QUEBEC CENTRAL |
| QMOO | QUEBEC, MONTREAL, OTTAWA AND OCCIDENTAL |
| QA | QUEEN ANNES RAILROAD |
| QTL | QUINCY AND TORCH LAKE |
| QW | QUINCY AND WESTERN |
| QRR | QUINCY RAILROAD |
| QOKC | QUINCY, OMAHA AND KANSAS CITY |
| RV | RAHWAY VALLEY |
| RL | RANGE LUMBER |
| RCBH | RAPID CITY, BLACK HILLS AND WESTERN |
| RLC | RAPIDES LUMBER COMPANY |
| RAR | RARITAN RIVER |
| RSG | RAVENSWOOD, SPENCER AND GREENWOOD |
| RGV | RAY AND GILA VALLEY |
| RAY | RAYONIER LUMBER COMPANY |
| RDR | READER |
| RDG | READING |
| RBMN | READING, BLUE MOUNTAIN AND NORTHERN |
| RSR | RENSELEAR AND SARATOGA |
| RHMC | RHEEM MANUFACTURING COMPANY |
| RD | RICHMOND AND DANVILLE |
| RFP | RICHMOND, FREDERICKSBURG AND POTOMAC |
| RGPS | RIO GRANDE AND PAGOSA SPRINGS |
| RGE | RIO GRANDE EASTERN |
| RGS | RIO GRANDE SOUTHERN |
| RGW | RIO GRANDE WESTERN |
| RCBT | ROARING CAMP AND BIG TREES |
| RS | ROBERVAL AND SAGUENAY |
| RSL | ROCHESTER AND STATE LINE |
| RIP | ROCK ISLAND AND PEORIA |
| RKAR | ROCK OF AGES RAILROAD |
| RR | ROCKTON AND RION |
| RWO | ROME, WATERTOWN AND OGDENSBURG |
| RO | RONDOUT AND OSWEGO |
| RSP | ROSCOE, SNYDER AND PACIFIC |
| RRS | RUGGLES AND RADEMAKER SALT COMPANY |
| RUT | RUTLAND |
| RB | RUTLAND AND BURLINGTON |
| SVAL | SACRAMENTO VALLEY |
| SMLC | SAGINAW AND MANISTEE LUMBER COMPANY |
| SLSC | SAGINAW LUMBER AND SALT COMPANY |
| SFCW | SALEM, FALLS CITY AND WESTERN |
| SR | SALINAS RAILWAY |
| SLMR | SALT LAKE AND MERCUR |
| SLVF | SALT LAKE VALLEY AND FORT DOUGLAS |
| SAAP | SAN ANTONIO AND ARANSAS PASS |
| SAUG | SAN ANTONIO, UVALDE AND GULF |
| SBAW | SAN BERNARDINO, ARROWHEAD AND WATERMAN |
| SDAE | SAN DIEGO AND ARIZONA EASTERN |
| SDIV | SAN DIEGO AND IMPERIAL VALLEY |
| SDPB | SAN DIEGO AND PACIFIC BEACH |
| SDCE | SAN DIEGO, CUYAMACA AND EASTERN |
| SFA | SAN FRANCISCO AND ALAMEDA |
| SFNP | SAN FRANCISCO AND NORTH PACIFIC |
| SFO | SAN FRANCISCO AND OAKLAND |
| SFSJ | SAN FRANCISCO AND SAN JOSE |
| SFBC | SAN FRANCISCO BRIDGE COMPANY |
| SFNW | SAN FRANCISCO NORTHWESTERN |
| SFNC | SAN FRANCISCO, NAPA AND CALISTOGA |
| SJE | SAN JOAQUIN AND EASTERN |
| SJAR | SAN JOSE AND ALUM ROCK |
| SJP | SAN JUAN PACIFIC |
| SLC | SAN LUIS CENTRAL |
| SLVS | SAN LUIS VALLEY SOUTHERN |
| SPV | SAN PETE VALLEY |
| SAND | SANDERSVILLE |
| SRRL | SANDY RIVER AND RANGELEY LAKES |
| SRR | SANDY RIVER RAILROAD |
| SGLC | SANGER LUMBER COMPANY |
| SAN | SANTA ANA AND NEWPORT |
| SARR | SANTA ANA RAIL ROAD |
| SBTP | SANTA BARBARA TIE AND POLE COMPANY |
| SCLC | SANTA CRUZ LUMBER COMPANY |
| SCRZ | SANTA CRUZ RAILROAD |
| SFC | SANTA FE CENTRAL |
| SFN | SANTA FE NORTHWESTERN RAILWAY |
| SMV | SANTA MARIA VALLEY |
| SATS | SATSOP RAILROAD |
| SRL | SAUK RIVER LUMBER |
| SA | SAVANNAH AND ATLANTA |
| SFW | SAVANNAH, FLORIDA AND WESTERN |
| SBLC | SCHAFER BROTHERS LOGGING COMPANY |
| SAL | SEABOARD AIR LINE RAILWAY |
| SEAR | SEABOARD AND ROANOKE |
| SIR | SEATTLE AND INTERNATIONAL RAILWAY |
| SLSE | SEATTLE, LAKE SHORE AND EASTERN |
| SLR | SHAVER LAKE RAILROAD |
| SHEA | SHEA BROTHERS |
| SFL | SHEBOYGAN AND FOND DU LAC |
| SMR | SHEBOYGAN AND MISSISSIPPI RIVER |
| SHT | SHEFFIELD AND TIONESTA |
| SCR | SHENANDOAH CENTRAL |
| SHC | SHEVLIN-HIXON COMPANY |
| SCHS | SIEMS, CAREY & H.S.KERBAUGH CORPORATION |
| SLCO | SIERRA LUMBER COMPANY |
| SNWL | SIERRA NEVADA WOOD AND LUMBER COMPANY |
| SERA | SIERRA RAILROAD |
| SILR | SILER LOGGING COMPANY |
| SCPA | SILVER CITY, PINOS ALTOS & MOGOLLON |
| SCS | SILVER CREEK AND STEPHENSON |
| SFTC | SILVER FALLS TIMBER COMPANY |
| SILL | SILVERTON LUMBER COMPANY |
| SILA | SILVERTON LUMBER COMPANY (LOUISIANA) |
| SILV | SILVERTON RAILROAD |
| SIML | SIMPSON LOGGING COMPANY |
| SIMP | SIMPSON REDWOOD COMPANY |
| STCO | SIMPSON TIMBER COMPANY |
| SVR | SINNEMAHONING VALLEY |
| SCP | SIOUX CITY AND PACIFIC |
| SCP | SIOUX CITY PACIFIC |
| SIX | SIX COMPANIES INC.RAILROAD |
| SGC | SKAGIT CITY LIGHT |
| SGMC | SKAGIT MILL COMPANY |
| SKAN | SKANEATLES RAILWAY |
| SPL | SMITH POWERS LOGGING COMPANY |
| SM | SMOKY MOUNTAIN RAILROAD |
| SCL | SNOW CREEK LOGGING |
| SMT | SONOMA MAGNESITE TRAMWAY |
| SNV | SONOMA VALLEY |
| STC | SOUND TIMBER COMPANY |
| SBSG | SOUTH BEND SAND AND GRAVEL |
| SOCR | SOUTH CAROLINA |
| SGA | SOUTH GEORGIA |
| SPC | SOUTH PACIFIC COAST |
| SSFB | SOUTH SAN FRANCISCO BELT |
| SSRT | SOUTH SIDE RAPID TRANSIT |
| SS | SOUTH SIMCOE |
| SVSL | SOUTH VANDALIA AND STATE LINE RAILROAD |
| SCE | SOUTHERN CALIFORNIA EDISON |
| SCMR | SOUTHERN CALIFORNIA MOTOR ROAD |
| SCAL | SOUTHERN CALIFORNIA RAILWAY |
| SOUC | SOUTHERN CENTRAL RAILROAD |
| SHLC | SOUTHERN HUMBOLDT LUMBER COMPANY |
| SOUL | SOUTHERN LUMBER COMPANY |
| SNJ | SOUTHERN NEW JERSEY |
| SONY | SOUTHERN NEW YORK |
| SP | SOUTHERN PACIFIC |
| SOU | SOUTHERN RAILWAY |
| SSLV | SOUTHERN SAN LOUIS VALLEY |
| SWT | SOUTHERN WOOD PROCESSING RAILROAD |
| SWSL | SOUTHWEST LUMBER COMPANY |
| SLM | SOUTHWEST LUMBER MILLS |
| SI | SPOKANE INTERNATIONAL |
| SPS | SPOKANE, PORTLAND AND SEATTLE |
| SSC | SPRECKELS SUGAR COMPANY |
| SPSW | SPRINGFIELD AND SOUTHWESTERN |
| SPRG | SPRINGFIELD RAILWAY |
| SCT | ST.CLAIR TUNNEL |
| SJLC | ST.JOHNSBURY AND LAKE CHAMPLAIN |
| SJGI | ST.JOSEPH AND GRAND ISLAND |
| SJV | ST.JOSEPH VALLEY |
| SLNA | ST.LOUIS AND NORTH ARKANSAS |
| SLOF | ST.LOUIS AND O'FALLON |
| SLOR | ST.LOUIS AND OHIO RIVER |
| SLCR | ST.LOUIS COAL RAILROAD |
| SSW | ST.LOUIS SOUTHWESTERN |
| SLAS | ST.LOUIS, ALTON AND SPRINGFIELD |
| SLBM | ST.LOUIS, BROWNSVILLE AND MEXICO |
| SLCS | ST.LOUIS, CHICAGO AND ST.PAUL |
| SLHK | ST.LOUIS, HANNIBAL AND KEOKUK |
| SLIM | ST.LOUIS, IRON MOUNTAIN AND SOUTHERN |
| SLKC | ST.LOUIS, KANSAS CITY AND NORTHERN |
| SRMP | ST.LOUIS, ROCKY MOUNTAIN AND PACIFIC |
| SLVT | ST.LOUIS, VANDALIA AND TERRE HAUTE |
| SLWG | ST.LOUIS, WATKINS AND GULF |
| SLSF | ST.LOUIS-SAN FRANCISCO |
| SML | ST.MARIES LUMBER COMPANY |
| SPD | ST.PAUL AND DULUTH |
| SPP | ST.PAUL AND PACIFIC |
| SPSC | ST.PAUL AND SIOUX CITY |
| SPTL | ST.PAUL AND TACOMA LUMBER |
| SPMM | ST.PAUL, MINNEAPOLIS AND MANITOBA |
| STRP | ST.REGIS PAPER COMPANY |
| STAR | STAR LOGGING AND LUMBER COMPANY |
| SIRT | STATEN ISLAND RAPID TRANSIT |
| STEW | STEWARTSTOWN RAILROAD |
| STLC | STIMSON LOGGING COMPANY |
| SCOP | STOCKTON AND COPPEROPOLIS |
| SVIS | STOCKTON AND VISALIA |
| STE | STOCKTON TERMINAL & EASTERN |
| SW | STONE AND WEBSTER COMPANY |
| SCCC | STONE CANON CONSOLIDATED COAL COMPANY |
| SCRR | STONE CANYON RAILROAD |
| SMRQ | STONE MOUNTAIN RAILROAD AND QUARRY COMPANY |
| STRB | STRASBURG RAILROAD |
| SB | STURGEON BAY RAILROAD |
| SPLC | SUGAR PINE LUMBER COMPANY |
| SPRY | SUGAR PINE RAILWAY |
| SRT | SULTAN RAILWAY AND TIMBER COMPANY |
| SC | SUMPTER AND CHOCTAW |
| SV | SUMPTER VALLEY |
| SVY | SUNCOOK VALLEY |
| SCRL | SUNCREST LUMBERT COMPANY |
| SUNL | SUNSET LOGGING COMPANY |
| SSS | SURREY, SUSSEX AND SOUTHAMPTON |
| SNY | SUSQUEHANNA AND NEW YORK |
| SWLC | SWAYNE LUMBER COMPANY |
| SHL | SWIFT-HUNTER LUMBER |
| SLDR | SWINERTON LOCOMOTIVE DRIVING WHEEL COMPANY |
| SYCR | SYCAMORE AND CORTLAND RAILROAD |
| SL | SYDNEY AND LOUISBURG |
| SYC | SYLVANIA CENTRAL |
| TJFC | T.J.FORSCHNER CONTRACTING COMPANY |
| TLH | T.L.HACKNEY COMPANY |
| TRMM | T.R.MILLER MILL COMPANY |
| TE | TACOMA EASTERN |
| TALB | TALBOTTON RAILROAD |
| TPC | TALLASSEE POWER COMPANY |
| TFR | TALLULAH FALLS RAILWAY |
| TJ | TAMPA AND JACKSONVILLE |
| TVM | TANANA VALLEY MINE RAILROAD |
| TLC | TATUM LUMBER COMPANY |
| TGR | TAVARES AND GULF |
| TRR | TECOPA RAILROAD |
| TRY | TEMISCOUATA RAILWAY |
| TNOR | TEMISKAMING AND NORTHERN ONTARIO |
| TC | TENNESSEE CENTRAL |
| TEC | TENNESSEE EASTMAN COMPANY |
| TENN | TENNESSEE RAILROAD |
| TVRM | TENNESSEE VALLEY RAILROAD MUSEUM |
| TAG | TENNESSEE, ALABAMA AND GEORGIA |
| TRRA | TERMINAL RAILROAD OF ST.LOUIS |
| THI | TERRE HAUTE AND INDIANAPOLIS |
| THP | TERRE HAUTE AND PEORIA |
| TSN | TEXARKANA, SHREVEPORT AND NATCHEZ |
| TFS | TEXAS AND FORT SMITH |
| TNO | TEXAS AND NEW ORLEANS |
| TP | TEXAS AND PACIFIC |
| TSTL | TEXAS AND ST.LOUIS |
| TXC | TEXAS CENTRAL |
| TMRR | TEXAS MIDLAND RR |
| TPWR | TEXAS PACIFIC AND WESTERN |
| TPMP | TEXAS PACIFIC MISSOURI PACIFIC TERMINAL |
| TSEN | TEXAS SOUTH-EASTERN |
| TSR | TEXAS STATE RAILROAD |
| TM | TEXAS-MEXICAN |
| TCC | TEZUITLAN COPPER COMPANY |
| THLC | THAYER LUMBER COMPANY |
| TMRL | THE MILWAUKEE ELECTRIC RAILWAY & LIGHT COMPANY |
| TMRL | THE MILWAUKEE ELECTRIC RAILWAY & LIGHT COMPANY |
| TPLC | THE PACIFIC LUMBER COMPANY |
| PREN | THE PRENDERGAST COMPANY |
| TRRL | THE RED RIVER LUMBER COMPANY |
| TLLR | THUNDER LAKE LUMBER COMPANY |
| TW | TIDEWATER AND WESTERN |
| TS | TIDEWATER SOUTHERN |
| TIMP | TIMPKIN ROLLER BEARING COMPANY |
| TIOL | TIOGA LUMBER COMPANY |
| TVR | TIONESTA VALLEY RAILROAD |
| TOC | TOLEDO AND OHIO CENTRAL |
| TT | TOLEDO TERMINAL |
| TAW | TOLEDO, ANGOLA AND WESTERN |
| TPW | TOLEDO, PEORIA AND WESTERN |
| TSLK | TOLEDO, ST.LOUIS AND KANSAS CITY |
| TG | TONOPAH AND GOLDFIELD |
| TTW | TONOPAH AND TIDEWATER |
| TV | TOOELE VALLEY |
| TN | TORONTO AND NIPISSING |
| THB | TORONTO, HAMITON AND BUFFALO |
| TMR | TREASURY MOUNTAIN RAILROAD |
| TRIN | TRINIDAD MILL COMPANY |
| TBV | TRINITY AND BRAZOS VALLEY |
| TCLC | TRINITY COUNTY LUMBER COMPANY |
| TSE | TUCKASEEGEE AND SOUTHEASTERN RAILWAY |
| TUCK | TUCKERTON RAILROAD |
| TUSK | TUSKEGEE RAILROAD |
| TSMC | TWIN SEAM MINING COMPANY |
| UR | UINTAH RAILROAD |
| UD | ULSTER AND DELAWARE |
| UV | UNADILLA VALLEY |
| UF | UNION FREIGHT RAILROAD |
| ULC | UNION LUMBER COMPANY (CALIFORNIA) |
| ULCW | UNION LUMBER COMPANY (WASHINGTON) |
| UP | UNION PACIFIC |
| UPDG | UNION PACIFIC, DENVER AND GULF |
| URR | UNION RAILROAD |
| UTC | UNION TRANSPORTATION COMPANY |
| UY | UNITED RAILROADS YUCATAN |
| USA | UNITED STATES ARMY |
| USGC | UNITED STATES GYPSUM COMPANY |
| USM | UNITED STATES METALS REFINING |
| USMR | UNITED STATES MILITARY RAILROAD |
| USC | UNITED SUGAR COMPANY |
| UVTS | UNITED VERDE TUNNEL & SMELTER |
| URY | UNITY RAILWAY |
| UMP | UPPER MERION AND PLYMOUTH |
| USAL | USAL REDWOOD COMPANY |
| UN | UTAH AND NORTHERN |
| UTAH | UTAH RAILWAY |
| UTS | UTAH SOUTHERN |
| UTW | UTAH WESTERN |
| UBR | UTICA AND BLACK RIVER |
| VS | VALLEY AND SILETZ |
| VLYC | VALLEY RAILROAD CONNECTICUT |
| VLYR | VALLEY RIVER RAILROAD |
| VRLC | VANCE REDWOOD LUMBER COMPANY |
| VMR | VANCE'S MAD RIVER RAILROAD |
| VPC | VANCOUVER PLYWOOD COMPANY |
| VAN | VANDALIA |
| VCY | VENTURA COUNTY |
| VC | VERMONT CENTRAL |
| VTR | VERMONT RAILWAY |
| VV | VERMONT VALLEY |
| VSSS | VERNONIA, SOUTH PARK AND SUNSET STEAM RR |
| VSP | VICKSBURG, SHREVEPORT AND PACIFIC |
| VSPS | VICKSBURG, SHREVEPORT AND SOUTHERN |
| VLM | VICTORIA LUMBER AND MANUFACTURING |
| VRY | VICTORIA RAILWAY |
| VRL | VIRGINIA AND RAINY LAKE |
| VSW | VIRGINIA AND SOUTHWESTERN |
| VT | VIRGINIA AND TRUCKEE |
| VBR | VIRGINIA BLUE RIDGE |
| VACA | VIRGINIA-CAROLINA |
| VGN | VIRGINIAN |
| VR | VISALIA RAILROAD |
| VIW | VULCAN IRON WORKS |
| WMRL | W.M.RITTER LUMBER COMPANY |
| WPZL | W.P.ZARTMAN LUMBER |
| WTCB | W.T.CARTER & BROTHER |
| WTSL | W.T.SMITH LUMBER |
| WAB | WABASH RAILROAD |
| WSLP | WABASH, ST.LOUIS AND PACIFIC |
| WBTS | WACO, BEAUMONT, TRINITY AND SABINE |
| WS | WADLEY SOUTHERN |
| WADS | WADSWORTH LUMBER COMPANY |
| WSC | WAIMANALO SUGAR COMPANY |
| WAN | WANAMIE COLLIERY |
| WOV | WARREN AND OUACHITA VALLEY |
| WSR | WARREN AND SALINE RIVER |
| WCRR | WARREN CREEK RAILROAD |
| WARL | WARREN LAMB LUMBER COMPANY |
| WSPR | WARREN SPRUCE COMPANY |
| WL | WASHINGTON AND LINCOLNTON |
| WPP | WASHINGTON PULP AND PAPER CORPORATION |
| WT | WASHINGTON TERMINAL |
| WORN | WASHINGTON, OREGON RAILROAD AND NAVIGATION |
| WCFN | WATERLOO, CEDAR FALLS AND NORTHERN |
| WLLC | WATSON LAND AND LUMBER COMPANY |
| WGB | WAUPACA-GREEN BAY |
| WWR | WAYNESBURG AND WASHINGTON |
| WMWN | WEATHERFORD, MINERAL WELLS AND NORTHERN |
| WLTC | WEBB LOGGING AND TIMBER COMPANY |
| WSTC | WEIRTON STEEL COMPANY |
| WAG | WELLSVILLE, ADDISON AND GALETON |
| WF | WEST FELICIANA |
| WFLC | WEST FORK LOGGING COMPANY |
| WFL | WEST FORK LUMBER CO |
| WFT | WEST FORK TIMBER COMPANY |
| WJS | WEST JERSEY AND SEASHORE |
| WJR | WEST JERSEY RAILROAD |
| WPBT | WEST PALM BEACH TERMINAL |
| WSH | WEST SHORE RAILROAD |
| WSCV | WEST SIDE AND CHERRY VALLEY |
| WSLC | WEST SIDE LUMBER COMOANY |
| WVCP | WEST VIRGINIA CENTRAL AND PITTSBURGH |
| WVN | WEST VIRGINIA NORTHERN |
| WWRY | WEST WISCONSIN RAILWAY |
| WAR | WESTERN ALLEGHENY RAILROAD |
| WARR | WESTERN AND ATLANTIC |
| WCC | WESTERN COAL AND COKE |
| WFI | WESTERN FOREST INDUSTRIES |
| WM | WESTERN MARYLAND |
| WMSR | WESTERN MARYLAND SCENIC RAILROAD |
| WMC | WESTERN MEAT COMPANY RAILROAD (CALIFORNIA) |
| WO | WESTERN OHIO |
| WP | WESTERN PACIFIC |
| WPR | WESTERN PACIFIC RAILROAD (SP PREDECESSOR) |
| WRM | WESTERN RAILROAD OF MASSACHUSETTS |
| WA | WESTERN RAILWAY OF ALABAMA |
| WMCO | WETMORE AND MORSE COMPANY |
| WTC | WEYERHAEUSER TIMBER COMPANY |
| WLE | WHEELING AND LAKE ERIE |
| WLL | WHITE LAKE LUMBER COMPANY |
| WMCR | WHITE MOUNTAIN CENTRAL RAILROAD |
| WPY | WHITE PASS AND YUKON |
| WRT | WHITE RIVER TIMBER COMPANY |
| WTR | WHITE TOP RAILWAY |
| WHC | WHITNEY COMPANY |
| WFNW | WICHITA FALLS AND NORTHWESTERN |
| WFS | WICHITA FALLS SOUTHERN |
| WFRF | WICHITA FALLS, RANGER AND FORT WORTH |
| WRLC | WILD RIVER LUMBER COMPANY |
| WBC | WILLAMETTE BRIDGE COMPANY |
| WVLC | WILLAMETTE VALLEY LUMBER COMPANY |
| WLW | WILSON, LUTHER AND WILSON RAILROAD |
| WW | WINCHESTER AND WESTERN |
| WIND | WIND RIVER LUMBER COMPANY |
| WINF | WINIFREDE RAILROAD |
| WH | WINNIPEG HYDRO RAILWAY |
| WSW | WINONA AND SOUTH-WESTERN |
| WSE | WINONA AND SOUTHEASTERN |
| WSP | WINONA AND ST.PETER |
| WSS | WINSTON-SALEM SOUTHBOUND |
| WQ | WISCASSET AND QUEBEC |
| WWF | WISCASSET, WATERVILLE AND FARMINGTON |
| WIMI | WISCONSIN AND MICHIGAN |
| WC | WISCONSIN CENTRAL |
| WLCC | WISCONSIN LIME AND CEMENT COMPANY |
| WLT | WISCONSIN LOGGING AND TIMBER |
| WLFB | WOLFEBORO RAILROAD |
| WE | WOOD AND ENGLISH |
| WIR | WOOD AND IVERSON |
| WALC | WOOD-ACME LOGGING COMPANY |
| WOOD | WOODSTOCK RAILROAD |
| WLC | WOODWORTH AND LOUISIANA CENTRAL |
| WTRR | WRIGHTSVILLE AND TENNILLE |
| WMR | WYOMING AND MISSOURI RIVER |
| WNW | WYOMING AND NORTH WESTERN |
| WYO | WYOMING RAILWAY |
| YVR | YAKIMA VALLEY RAILROAD |
| YVT | YAKIMA VALLEY TRACTION |
| YRR | YANCEY RAILROAD |
| YBLC | YAWKEY-BISSELL LUMBER COMPANY |
| YMV | YAZOO & MISSISSIPPI VALLEY |
| YP | YELLOWSTONE PARK RAILROAD |
| YPLC | YEON AND PELTON LOGGING COMPANY |
| YSL | YOLO SHORTLINE RAILROAD |
| YMSP | YOSEMITE MOUNTAIN-SUGAR PINE |
| YV | YOSEMITE VALLEY |
| YVLC | YOSEMITE VALLEY LUMBER COMPANY |
| YN | YOUNGSTOWN AND NORTHERN |
| YW | YREKA WESTERN |
| ZW | ZANESVILLE AND WESTERN |
