| "Dry Ice" Refrigerator Line, Pure Carbonic Co., a Division of Air Reduction Co., Inc. (Merchants Despatch Transportation Corp.) | DICX | Oct-66 | ||
| (D&M) Detroit & Mackinac Ry. | DM | 7/65-10/66 | ||
| (D&RGW) Denver & Rio Grande Western R.R. Co. | DRGW | Apr-70 | ||
| (D&TS) Detroit & Toledo Shore Line R.R. Co. | DTS | 7/65-10/66 | ||
| D & H Corp. | DH | added 7/91; eliminated 7/92 | ||
| DHNY | added 7/91; eliminated 7/92 | |||
| D&I R.R. Co. | DAIR | added 7/82; 1/94-7/2000 | ||
| D.A. Walmsley & Co. | DAWX | Jul-00 | ||
| D.L. & W., Inc. | DLWX | Jul-00 | ||
| D.L. Orme | ORMX | 1/52-10/66; eliminated 1/70 | ||
| D.O.T. Rail Services, Inc. | DRSX | Jul-00 | ||
| D.P. Tafe | DPTX | Jan-52 | ||
| Dacar Chemical Products Co. | DCPX | 1/52-7/65; eliminated 7/66 | ||
| Dairy Shippers Despatch Co. | DSDX | 4/38-10/66; eliminated 1/67 | ||
| Dairyland Power Cooperative | DAPX | 1/80-7/2000 | ||
| Dakota Gasification Co. | DGCX | added 10/96; 7/2000 | ||
| Dakota Rail Inc. | DAKR | added 7/82; eliminated 1/89; 1/94-7/2000; eliminated 10/2000 | ||
| Dakota Southern Ry. Co. | DSRC | added 4/86; 1/94-7/2000 | ||
| Dakota, Minnesota & Eastern R.R. Corp. | DME | added 1/87; 1/94-7/2000 | ||
| Dakota, Missouri Valley & Western R.R., Inc. | DMVW | added 1/91; 1/94-7/2000 | ||
| Dale L. Thornborough | DLTX | 1/80; added 7/80; eliminated 10/90; 1/94-7/2000 | ||
| Dallas Oil & Refining Co. | DORX | Apr-38 | ||
| Dallas Union Terminal | DUTC | 1/75-7/2000 | ||
| Dallas, Garland & Northeastern R.R., Inc. | DGNO | 1/94; added 7/94; 7/2000 | ||
| Daly Refining Co. | DALX | Apr-38 | ||
| Dana Railcare | DNAX | added 1/96; 7/2000 | ||
| Danbury Railway Museum Inc. | DRMX | Jul-00 | ||
| Danbury Terminal R.R. Co. | DTRR | added 4/93; 1/94; eliminated 7/97 | ||
| DTRR | Jul-00 | |||
| Danella Construction Corp. | DCIX | added 7/88; 1/94; added 4/97; 7/2000 | ||
| Daniel John Marnell | DJMX | Jul-00 | ||
| Dansville & Mount Morris R.R. Co. | D&MM | Apr-38 | ||
| DMM | 1/75-7/2000 | |||
| Danville & Western Ry. | D&W | Apr-38 | ||
| Danville & Western Ry. (Southern Ry. System) | D&W | 23-Jul | ||
| Danville Industries, Inc. | DANX | added 1/74; 1/75-1/80; eliminated 4/82 | ||
| Dardanelle & Russellville R.R. Co. | DR | 1/75-1/80; added 7/81; eliminated 7/88; 1/94-7/2000 | ||
| Darling & Co. | DACX | 4/38-1/80 | ||
| Dart Container Corp. of Pennsylvania | DCPX | 1/75; added 4/75; 1/80-1/94; eliminated 4/2000; 7/2000 | ||
| DATX Associates | DATX | 1/94-7/2000 | ||
| Davenport Cement Co. | DPLX | eliminated 4/85 | ||
| Davenport Mammoet L.L.C. | DMHX | added 4/97; 7/2000 | ||
| Davenport, Rock Island & North Western Ry. Co. | DRI | 7/23-1/94; eliminated 7/96; 7/2000 | ||
| David J. Joseph Co. | PSTX | added 4/99; eliminated 4/2000 | ||
| David Levi & Co. (Mather Stock Car Co.) | DLCX | Apr-38 | ||
| David Witherspoon, Inc. | DWCX | 7/65-1/80; eliminated 10/93; 1/94-7/2000 | ||
| Davidson Construction Materials, Inc. | DCMX | added 4/82; eliminated 4/89 | ||
| Davison Chemical Co., Division of W.R. Grace & Co. | DCCX | Oct-57 | ||
| Davison Chemical Corp. | DCCX | Jan-52 | ||
| Daylight Locomotives & Machine Works, Inc. | DLMX | 1/94-7/2000 | ||
| Dayton Power and Light Co. | CCDX | added 4/78; 1/80-1/94; eliminated 10/98; 7/2000 | ||
| De Queen and Eastern R.R. Co. | DQE | 1/75-7/2000 | ||
| Dearborn Leasing Co. | DLCX | added 7/64; 7/65-1/80; eliminated 7/82 | ||
| Decatur Junction Ry. Co. | DT | 1/94-7/2000 | ||
| Decker Meat Refrigerator Line (General American Transportation Corp.) | DMRX | Apr-38 | ||
| Deep Rock Oil Corp. | DRX | Apr-38 | ||
| Deep Rock Refining Co. | DPRX | 10/57-10/66; eliminated 7/68 | ||
| Deer Park Ry. | DP | 4/38-1/52 | ||
| Deering Southwestern Ry. | DSW | 23-Jul | ||
| Degussa Canada Ltd. | DLPX | Jul-00 | ||
| Degussa Corp. | DCBX | added 7/91; 1/94-7/2000 | ||
| DHPX | added 4/98; 7/2000 | |||
| DSLX | added 4/97; 7/2000 | |||
| DeKalb & Western R.R. | DKW | 4/38-1/52 | ||
| DeKalb & Western R.R. Co. | DK&W | 23-Jul | ||
| Delaware & Northern R.R. | D&N | Apr-38 | ||
| Delaware & Northern R.R. Co. | D&N | 23-Jul | ||
| Delaware and Hudson R.R. Corp. | D&H | 1/52-10/66 | ||
| Delaware and Hudson Ry. Co., Inc. | DH | 1/75-1/80; eliminated 7/91 | ||
| DH | added 7/92; 1/94-7/2000 | |||
| DHNY | added 10/81; eliminated 10/88; added 7/89; eliminated 7/91 | |||
| DHNY | added 7/92; 1/94-7/2000 | |||
| NJ | added 7/94; 7/2000 | |||
| Delaware Coast Line R.R. Co. | DCLR | added 10/83; 1/94; eliminated 1/95 | ||
| Delaware Railcar Leasing, Inc. | DRLX | added 4/68; 4/70-1/75; eliminated 7/79 | ||
| Delaware River & Union R.R. | DR&U | Apr-38 | ||
| Delaware River & Union R.R. Co. | DR&U | 23-Jul | ||
| Delaware Valley Ry. Co., Inc. | DV | added 10/94; eliminated 10/99; 7/2000 | ||
| Delaware, Lackawanna & Western R.R. | DL&W | 4/38-7/65 | ||
| Delaware-Lackawanna R.R. Co., Inc. | DL | added 1/94; 7/2000 | ||
| Delray Connecting R.R. Co. | DC | 7/23-7/2000 | ||
| Delta Chemical & Iron Co. | DCMX | Apr-38 | ||
| Delta Southern R.R. Co. | DSRR | 1/94-7/2000 | ||
| Delta Tank Line Co. | DTLX | added 7/63; 7/65-1/80; eliminated 7/92; 1/94-7/2000 | ||
| Delta Tank Line Co. | RLKX | eliminated 4/84 | ||
| Delta Valley & Southern Ry. Co. | DVS | 1/75; added 7/79; 1/80-7/2000 | ||
| Demeter, Inc. | DEMX | added 4/89; 1/94-7/2000 | ||
| Denco Petroleum, Inc. | DNCX | added 10/91; eliminated 1/93; 1/94 | ||
| Denver & Intermountain R.R. | DIM | 4/38-1/52 | ||
| Denver & Intermountain R.R. Co. | D&IM | 7/23-1/52 | ||
| Denver & Rio Grande Western R.R. | D&RGW | 4/38-10/66 | ||
| D&SL | 4/61-7/65 | |||
| Denver & Rio Grande Western R.R. Co. | DRGW | 1/75-1/94; eliminated 7/97 | ||
| Denver & Rio Grande Western R.R. System | D&RG | 23-Jul | ||
| Denver & Royal Gorge Ry., LLC | DRGX | Jul-00 | ||
| Denver & Salt Lake Ry. | D&SL | 4/38-10/57 | ||
| Denver & Salt Lake Ry. Co. | D&SL | 23-Jul | ||
| Denver Rock Island R.R. | DRIR | added 4/97; 7/2000 | ||
| Denver Ry., Inc. | DRWY | added 1/90; eliminated 10/92; 1/94 | ||
| Denver Terminal R.R. Co. | DTMR | added 10/87; eliminated 4/90 | ||
| Denver Union Terminal Ry., Co. | DUT | 1/94-7/2000 | ||
| Department of the Army | DAFX | eliminated 7/58 | ||
| Department of the Army, Office of the Chief of Transportation | DAFX | Oct-57 | ||
| Department of the Army, Office of the Chief of Transportation, Movements Division, Tank Car Section | CWSX | Jan-52 | ||
| Department of the Army, Office of the Chief of Transportation, Railway Transport Service Division | DAFX | added 10/53 | ||
| Dependable Properties, Inc. | DEPX | added 10/74; 1/75-1/80 | ||
| Depew, Lancaster & Western R.R. Co., Inc. | DLWR | 1/94-7/2000 | ||
| Dept. of Defense | DAFX | added 4/94; eliminated 7/94 | ||
| Dept. of Defense, Defense Traffic Management Service | USAX | added 4/62; eliminated 7/65 | ||
| USNX | added 4/62; eliminated 7/65 | |||
| Dept. of Defense, Military Traffic Management Agency | USAX | eliminated 4/62 | ||
| USNX | eliminated 4/62 | |||
| Dept. of Defense, Military Traffic Management and Terminal Service | DAFX | added 10/66; 10/66-4/70; eliminated 1/74 | ||
| DODX | added 10/65; 10/66-4/70 | |||
| USAX | added 7/65; 7/65-4/70 | |||
| USNX | added 7/65; 7/65-4/70 | |||
| Dept. of Defense, Military Traffic Management Command | DAFX | Jan-75 | ||
| DODX | 1/75-7/2000 | |||
| USAX | 1/75; eliminated 7/75 | |||
| USNX | 1/75; eliminated 7/75 | |||
| Dept. of Defense, Military Traffic Management Command (intra-plant service) | USNX | 1/80-7/2000 | ||
| Dept. of Defense, MTMC | DAFX | eliminated 4/95 | ||
| Dept. of Defense, Troop Support and Aviation Material Readiness Command (intra-plant service) | DAFX | 1/80-1/94 | ||
| DAFX | Jul-00 | |||
| USAX | 1/80-7/2000 | |||
| Dept. of the Army, Office of the Chief of Transportation, Movement Division, Tank Car Section | USQX | Jan-52 | ||
| USAX | 1/52-10/57 | |||
| USAX | 1/52-4/61 | |||
| USOX | Jan-52 | |||
| Dept. of the Army, Transportation Supply and Maintenance Command | USAX | eliminated 7/58 | ||
| Dept. of the Army, U.S. Army Transportation Supply and Maintenance Command | USAX | added 7/58 | ||
| Dept. of the Navy, Bureau of S. & A. | USNX | 1/52-10/57 | ||
| Derby Oil Co. | DOX | 1/52; eliminated 4/55 | ||
| Derby Oil Co. (General American Transportation Corp.) | DOX | Apr-38 | ||
| Derby Refining Co. | DOX | added 4/55; 10/57; eliminated 1/60 | ||
| Des Moines & Central Iowa R.R. | D&CI | 23-Jul | ||
| Des Moines & Central Iowa Ry. Co. | DCI | 4/38-10/66 & 1/75-1/80 | ||
| Des Moines Ice Co. | DMCX | added 7/63 | ||
| Des Moines Union Ry. Co. | DMU | 7/23-10/66 & 1/75-1/80; eliminated 10/89 | ||
| Des Moines, Iowa Falls & Northern R.R. (Chicago, Rock Island & Pacific Ry.) | RI | 23-Jul | ||
| Des Plaines Chemical Co. | DCCX | 7/65; added 10/66; 10/66; eliminated 1/69 | ||
| Detroit & Mackinac Ry. | D&M | 7/23-4/61 | ||
| DM | 1/75-1/80; eliminated 4/92 | |||
| Detroit & Toledo Shore Line R.R. | D&TS | 4/38-4/61 | ||
| Detroit & Toledo Shore Line R.R. Co. | D&TS | 23-Jul | ||
| DTS | 1/75-1/80; eliminated 1/82 | |||
| Detroit & Western | DW | 1/75-1/80 | ||
| Detroit Chemical Works | DCWX | 1/52-4/61 | ||
| Detroit Chemical Works, Division of Pressure Vessel Service, Inc. | DCWX | added 10/69; 4/70; eliminated 1/75 | ||
| Detroit Reduction Co. | DRDX | Apr-38 | ||
| Detroit Terminal R.R. Co. | DT | 7/23-10/66 & 1/75-1/80; eliminated 1/82 | ||
| Detroit, Toledo & Ironton R.R. | DT&I | 4/38-10/66 | ||
| Detroit, Toledo & Ironton R.R. Co. | DT&I | 23-Jul | ||
| DTI | 4/61-10/66 & 1/75-1/80 | |||
| Detroit, Toledo and Ironton R.R. Co. | USLD | 4/70-1/80; eliminated 1/80 | ||
| Devco Ry., Cape Breton Development Corp. (Coal Division) | DVR | 1/75-1/94; eliminated 4/2000; 7/2000 | ||
| Dewey Portland Cement Co. | DPCX | 1/52-10/57; eliminated 7/60 | ||
| Dewey Portland Cement Co., Division of Martin-Marletta Corp. | DPCX | 7/65-4/70; eliminated 10/72 | ||
| DPLX | added 1/65; 7/65-4/70; eliminated 10/72 | |||
| Dewwy Portland Cement Co., Division of American-Marietta Co. | DPCX | added 7/60; 4/61 | ||
| D-H Investors | LSCX | added 4/90 | ||
| D-H Investors (Relam Auditing Service) | LSCX | 1/94; eliminated 7/98; 7/2000 | ||
| Diamond Alkali Co. | DAX | 4/38-10/66; eliminated 4/68 | ||
| Diamond Alkali Co. of California | DCX | 1/52; eliminated 7/56 | ||
| Diamond Bathurst, Inc. | BDCX | eliminated 10/89 | ||
| Diamond Shamrock Chemicals Co. | DAX | eliminated 7/87 | ||
| SOGX | eliminated 7/84 | |||
| Diamond Shamrock Corp. | DAX | added 4/68; 4/70-1/80 | ||
| SOGX | added 4/68; 4/70-1/80 | |||
| Didion, Inc. | DDNX | added 7/93; 1/94; eliminated 1/2000; added 7/2000 | ||
| Diesel Supply Co. Inc. | DLSX | Jul-00 | ||
| DIFCO, Inc. | DSCX | 1/94-7/2000 | ||
| Digby Trucklines | DGBY | Jul-00 | ||
| Distillation Products Industries, Division of Eastman Kodak Co. | DPIX | Jan-52 | ||
| Diversified Lease Funding, Inc. | DLFX | 1/94; added 4/94; eliminated 7/98; 7/2000 | ||
| Dixon Plywood, a Division of Dixon Lumber Co., Inc. | DPWX | added 7/74; 1/75-1/80; eliminated 1/81 | ||
| DJJ Leasing Ltd. | DJLX | added 7/98; eliminated 4/2000 | ||
| Dodge City Ford & Bucklin R.R. Co., Inc. | DCFB | 1/94-7/2000 | ||
| Dolese Bros. Co. | DOLX | added 7/78; 1/80-7/2000; eliminated 7/2000 | ||
| Dominion Alkali & Chemical Co., Ltd. | DALX | Jan-52 | ||
| Dominion Atlantic Ry. Co. | DA | 7/23-10/66 | ||
| Dominion Linseed Oil Co., Ltd. | DLOX | 4/38-1/52 | ||
| Dominion Rubber Co., Ltd. | NCX | 1/52-7/65 | ||
| Dominion Sugar Co. (Canada and Dominion Sugar Co., Ltd.) | DSLX | 4/38-1/52 | ||
| Dominion Tar & Chemical Co., Ltd. | DTCX | 4/38-7/65; eliminated 10/65 | ||
| Domino Sugar Corp. | ASRX | added 10/92; 1/94-7/2000 | ||
| Domtar Ltd. | DTCX | added 10/65; 10/66-4/70; eliminated 7/73 | ||
| Donald J. Bertel d/b/a Gandy Dancer, Inc. | DJBX | Jul-00 | ||
| Doniphan, Kensett & Searcy Ry. | DKS | 1/75; added 1/77; 1/80-1/94 | ||
| ARDP | eliminated 1/79; 1/80 | |||
| ARMH | Jan-80 | |||
| Donner-Hanna Coke Corp. | DUX | 4/38-1/75; eliminated 1/80 | ||
| DUX | eliminated 10/82 | |||
| Donner-Hanna Coke Joint Venture | DUX | added 1/80; 1/80 | ||
| Donora Southern R.R. | DSO | 4/38-4/61 | ||
| Donora Southern R.R. Co. | DSO | 23-Jul | ||
| Dorchester Corp. | PANX | 10/57-4/61; eliminated 4/62 | ||
| Dorchester Gas Producing Co. | PANX | added 4/62; 7/65-4/70; eliminated 4/71 | ||
| Dothan Oil Mill Co. | DOMX | 1/52-10/57; eliminated 7/58 | ||
| Double M Ranch Enterprises | MMRX | 1/94-7/2000 | ||
| Douredoure Brothers | DBX | Apr-38 | ||
| Dow Badische Co. | DBCX | added 1/73; 1/75; eliminated 7/79 | ||
| Dow Chemical Canada, Inc. | DCLX | added 4/97; 7/2000 | ||
| CGBX | added 4/97; 7/2000 | |||
| Dow Chemical Co., Ludington Division | DLDX | 10/57-7/65; eliminated 1/66 | ||
| Dow Chemical Co., Texas Division | DTDX | 1/52-10/57; eliminated 7/58 | ||
| DTDX | 4/61-7/65; eliminated 1/66 | |||
| Dowdle Butane Gas Co., Inc. | DBGX | added 1/68; 4/70-1/80; eliminated 4/86 | ||
| Dowell Schlumberger Inc. | DSIX | added 1/95; 7/2000 | ||
| Doxol Gas Supply, Inc. | SUBX | eliminated 4/65 | ||
| Dragon Cement Co., Division of Martin Marietta Corp. | DRCX | added 7/69; 4/70; eliminated 10/72 | ||
| Drake Tank Car Co. | DRAX | added 1/66; 10/66-4/70; eliminated 11/73 | ||
| DRAYCUTT Corp. | DRAX | added 7/82; eliminated 1/90 | ||
| Dresser Leasing Co. | NELX | 1/80; eliminated 7/86 | ||
| Dresser Leasing Corp. | NDYX | 1/80; eliminated 4/88 | ||
| Dresser Transportation Equipment Division, Dresser Industries, Inc. | DTEX | added 10/69; 4/70-1/80; eliminated 1/81 | ||
| Dresser Transportation Equipment Division, Dresser Industries, Inc. (test cars) | DTEX | 1/94-7/2000 | ||
| Drummond Lighterage | DLC | 1/75-7/2000 | ||
| Dry Ice Co., Refrigerator Line | DICX | Apr-38 | ||
| DTE Coal Services, Inc. | DFTX | added 7/2001 | ||
| DTCX | added 7/2001 | |||
| DTE Transportation Services, Inc. | DFTX | Jul-00 | ||
| DTCX | Jul-00 | |||
| FLDX | Jul-00 | |||
| Du Pont Canada Inc. | DOCX | added 1/80; 1/80-7/2000 | ||
| DUCX | 1/94-7/2000 | |||
| Dubois County R.R. | DCRR | 1/94-7/2000 | ||
| Due West Motor Line | DWML | 1/75-1/80 | ||
| Dufour Petroleum, Inc. | DPIX | 1/94; added 1/97; 7/2000 | ||
| Duke Power Co. (scale test cars) | DKPX | 1/94-7/2000 | ||
| Duke, Inc. | DUKX | added 4/67; 4/70 | ||
| Duluth & Iron Range R.R. | D&IR | 4/38-1/52 | ||
| Duluth & Northeastern R.R. Co. | DNE | 1/75-1/80; eliminated 1/85; eliminated 1/94; 7/2000 | ||
| Duluth, Missabe & Iron Range Ry. Co. | DMIR | 4/38-7/2000 | ||
| Duluth, Missabe & Northern Ry. | DM&N | 4/38-1/52 | ||
| Duluth, South Shore & Atlantic R.R. | DSA | 1/52-4/61 | ||
| Duluth, South Shore & Atlantic Ry. | DS&A | 23-Jul | ||
| DSS&A | Apr-38 | |||
| Duluth, South Shore and Atlantic R.R. Co. | DSA | Oct-66 | ||
| Duluth, Winnipeg & Pacific Ry. | DWC | 1/75-1/80; eliminated 1/93 | ||
| DW&P | 23-Jul | |||
| DWP | 4/38-10/66 & 1/75-1/80; eliminated 10/81; added 4/89; eliminated 1/93 | |||
| DWP | added 7/93; 1/94-7/2000 | |||
| Dunn-Erwin Ry. Corp. | DER | Jan-94 | ||
| Dupont Dow Elastomere, L.L.C. | DDEX | Jul-00 | ||
| DuPont of Canada Ltd. | DOCX | added 10/65; 10/66-1/75; eliminated 1/80 | ||
| Durbin and Greenbrier Valley R.R., Inc. d/b/a West Virginia Central R.R. | WVC | added 1/99; 7/2000 | ||
| Duredo Co. (John H. Grace Co.) | DRDX | 1/52-1/75; eliminated 7/79 | ||
| Duredo Co., care of John H. Grace Co. | PTLX | Jan-52 | ||
| Durham and Southern Ry. Co. | DS | 1/75-1/80; eliminated 4/82 | ||
| Durham Transport | DRHY | added 7/2000; 7/2000 | ||
| Durham Transport Inc. | DRHY | Jan-94 | ||
| Durkee Famous Foods, Division of the Glidden Co. | DFFX | 4/38-4/61 | ||
| Dussek Campbell, Inc. | NWAX | added 7/2000; 7/2000 | ||
| Duval Corp. | DVLX | added 7/78; 1/80; eliminated 4/85 | ||
| Duval Engineering & Contracting Co. | DECX | 1/52-10/57 | ||
| Duval Sales Corp. | DVLX | Jan-75 | ||
| D-X Sunray Oil Co. | COSX | 10/57; eliminated 10/59 | ||
| OSKX | 10/57-4/61 | |||
| SRDX | 10/57-4/61 | |||
| Dynabulk Corp. | DYNX | added 4/66; 10/66; eliminated 7/69 | ||
| Dyno Nobel, Inc. | DYNX | added 1/94; 7/2000 | ||
| Dyson's Ltd. | DLX | 1/52-4/61; eliminated 4/62 | ||