| Abbreviation | Railroad Name |
| COCH | C&O Chessie |
| CADDO RIVE | Caddo River
|
| CAD | Cadiz RR
|
| CTML | Cairo Terminal
|
| CAL GAS | Cal Gas
|
| CAL TRAIN | Cal Train
|
| CAL WEST | Cal West
|
| CALAVERAS | Calaveras Cement
|
| CALIF | California
|
| CFX | California Fruit Express
|
| CWRN | California Western Rr& Nav Co
|
| CZ | California Zephyr
|
| CAIN | Cambria & Indiana
|
| BPLT | Camino Placerville & Lake Tahoe
|
| CAMPBELLS | Campbells Creek
|
| CANADA | Canada
|
| CASO | Canada Southern
|
| CGT | Canadian General Tranist Co |
| CN | Canadian National
|
| CNR | Canadian National Rail
|
| CP | Canadian Pacific
|
| CPR | Canadian Pacific Rail
|
| CFWR | Canery Fork & Western
|
| CANPOTEX | Canpotex
|
| CANTON | Canton
|
| CNTC | Canton & Carthage
|
| CTN | Canton Railroad
|
| CBCNS | Cape Breton & Cent Nova Scotia
|
| CAPE FEAR | Cape Fear
|
| CAPITAL | Capital
|
| CARBON CNT | Carbon County
|
| CRGX | Cargill
|
| CARLING | Carling
|
| CANW | Carolina & North Western
|
| CARS | Carolina Southern
|
| CWR | Carolina Western
|
| CA | Carrollton
|
| CASCO | CASCO GATX
|
| CASPER LMB | Casper Lumber
|
| CSFE | Casper, South Fork & Eastern
|
| CASS | Cass Scenic Rr
|
| CVLE | Cassville & Exeter
|
| CASTLEMAN | Castleman River - MA&PA
|
| CAT | Caterpillar
|
| CCLX | CCLX/CPC International
|
| GECX | CECX Leasing
|
| CIC | Cedar Rapids & Iowa City (elec)
|
| CEFX | CEFX Leasing
|
| CELX | Celtran Incorperated
|
| CCT | Central California Traction (elec)
|
| CI | Central Indiana
|
| CG | Central Of Georgia
|
| CNJ | Central Of New Jersey
|
| CORP | Central Oregon & Pacific
|
| CENTRAL PA | Central Pacific
|
| SDRX | Central Puget Sound Regional Trans
|
| CERA | Central Railroad Of Indiapolis
|
| CSOY | Central Soya
|
| CV | Central Vermont
|
| CENB | Century Beer
|
| CERE | Cerestar
|
| CHAN | Chandler Corp USLX
|
| CCW | Charles City Western (elec)
|
| CWC | Charleston & Western Carolina
|
| CHATT VLLY | Chattahootchee Valley
|
| CWWR | Chehalis Western
|
| CHEM | Chemplex Plastics
|
| CHERRY RIV | Cherry River
|
| CHSD | Chesapeake & Delaware
|
| CO | Chesapeake & Ohio
|
| CHW | Chesapeake Western
|
| CHES | Chessie System
|
| CHR | Chestnut Ridge
|
| CMD | Chevrolet
|
| CHVX | Chevron Chemical Co.
|
| CEI | Chic & Eastern Il(UP)
|
| CIW | Chic & Il Wstrn(IL Ctrl)
|
| CHTT | Chic Hghts Term Trans(UP)
|
| CMNW | Chic Ms & Wstrn(Gwy Wstrn)
|
| CRI | Chic River & In(* Conrail)
|
| CWP | Chic W Pullman & Sthrn
|
| CHCA | Chicago & Alton
|
| CIM | Chicago & Illinois Midland
|
| CNW | Chicago & North Western
|
| CSTL | Chicago & St Louis
|
| CWI | Chicago & Western Indiana
|
| CAE | Chicago Aurora & Elgin (elec)
|
| CBQ | Chicago Burlington & Quincy
|
| CC | Chicago Central & Pacific
|
| CCCSTL | Chicago Cleveland Cinciatti & St Louis
|
| CGW | Chicago Great Western
|
| CIL | Chicago Indianapolis & Louisville
|
| CHICAGO IN | Chicago Interurbans
|
| CMST | Chicago Milwaukee & St. Paul
|
| CMSTO | Chicago Minn. St Paul & Omaha
|
| CNSM | Chicago No. Shore & Milw (elec)
|
| CRL | Chicago Rail Link
|
| CHRTA | Chicago RTA
|
| CSSSB | Chicago S Shore & S Bend Elec
|
| CSL | Chicago Short Line
|
| CSTPMO | Chicago St Paul Minn & Omaha
|
| CHIX | Chicago Tank Car Co.
|
| RI | Chicago, Rock Island & Pacific
|
| CHP | Chih Pac(Nat Rlwys Of Mex)
|
| CHINA | China
|
| XMAS | Christmas
|
| CINN | Cincinnati Northern |
| CSR | Cincinnati Street Rlwy |
| CUT | Cincinnati Union Terminal
|
| CIRCUS | Circus Theme Roads
|
| CSOX | CITGO Petroleum
|
| COP | City Of Prineville
|
| CLAREMONT | Claremont (elec)
|
| CLPT | Clarendon & Pittsford
|
| CLARION RV | Clarion River
|
| CLE | Cleveland & Lake Erie
|
| CCCI | Cleveland Columbus & Cincinnati
|
| CLIFFSIDE | Cliffside
|
| CRR | Clinchfield
|
| CCP | Clinton Corn Processing
|
| CNOTP | CNO&TP
|
| COOP | Co-Op Marketing
|
| COASTER | Coaster
|
| CSCCD | Colo Spgs & Cripple Creek Dist.
|
| CSUX | Colo Spgs Dept Of Utilities
|
| COLORADO | Colorado
|
| CSE | Colorado & South-eastern
|
| CS | Colorado & Southern
|
| CW | Colorado & Wyoming
|
| CM | Colorado Midland
|
| CMIN | Colorado Mining
|
| COLTEX | COLTEX
|
| CLBMIL | Columbia & Millstadt
|
| COL VALLEY | Columbia Valley
|
| CNL | Columbia, Newberry & Laurens
|
| CGRN | Columbus & Greenville
|
| COMX | Commonwealth Eison
|
| CKS | Condon, Kinzua & Southern
|
| COND | Connecticut Dot |
| CONX | Conoco
|
| CR | Conrail
|
| CONT POLY | Contental Polymers
|
| COC | Contiental Oil Company
|
| CNT | Continental |
| COORS | Coors Beer
|
| COOS | Coos Bay Lumber
|
| CBRY | Copper Basin
|
| COPPER RAN | Copper Range
|
| CRLE | Cor Rail
|
| CPRD | Corn Products
|
| CCR | Cornith & Counce (Tennrail)
|
| COSDEN | Cosden Oil & Chemical
|
| COSMOS LMB | Cosmos Lumber
|
| SSW | Cotton Belt
|
| CPA | Coudersport & Port Allegany
|
| CZCC | Cowlitz Chehalis & Cascade
|
| COER | Crab Orchard & Egyptian
|
| CRAIG MTN | Craig Mountain
|
| CBYN | Crosbyton Railroad
|
| CROWN WILL | Crown William
|
| CSX | Csx Transportation
|
| CTTX | CTTX |
| CBLP | Cumberland & Pennsylvania
|
| CMM | Cumberline Mine
|
| CT | Cumbres & Toltec
|
