AERC
| Albany and Eastern Railroad Company | 2 |
AKMD
| Arkansas Midland Railroad Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 20 |
ATW
| Atlantic and Western | 34 |
BCOL
| Canadian National Railways | 7 |
BNSF
| BNSF Railway | 4 |
CHTT
| Chicago Heights Terminal Transfer | 6 |
CN
| Canadian National Railways | 8 |
CNIS
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 2 |
CRLE
| Coe Rail Incorporated | 5 |
DWC
| Canadian National Railways | 5 |
FURX
| First Union Rail | 4 |
GNRR
| Georgia Northeastern | 1 |
GTW
| Grand Trunk Western | 3 |
HLSC
| Hampton Railway Incorporated | 34 |
IC
| Illinois Central | 4 |
NOKL
| Northwestern Oklahoma | 45 |
SERA
| Sierra Northern Railway | 3 |
SMW
| St Marys Railway West LLC | 2 |
SOO
| Soo Line | 15 |
SRY
| Southern Railway of British Columbia Lim | 5 |
TR
| Tomahawk Railway L.P. | 15 |
TTZX
| TTX Company-Centerbeam Flats | 334 |
UP
| Union Pacific Railroad Company | 12 |
WC
| Wisconsin Central | 9 |
WCRC
| Washington Central | 3 |