AERC
| Albany and Eastern Railroad Company | 1 |
AKMD
| Arkansas Midland Railroad Company | 5 |
AOK
| Arkansas-Oklahoma Railroad | 18 |
ATW
| Atlantic and Western | 18 |
BNSF
| BNSF Railway | 21 |
CHTT
| Chicago Heights Terminal Transfer | 10 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CN
| Canadian National Railways | 3 |
CORP
| Central Oregon & Pacific | 1 |
CRLE
| Coe Rail Incorporated | 3 |
DWC
| Canadian National Railways | 1 |
FURX
| First Union Rail | 2 |
GTW
| Grand Trunk Western | 1 |
HLSC
| Hampton Railway Incorporated | 10 |
LW
| Louisville and Wadley Railway Company | 15 |
NOKL
| Northwestern Oklahoma | 42 |
NS
| Norfolk Southern | 2 |
SERA
| Sierra Northern Railway | 1 |
TR
| Tomahawk Railway L.P. | 5 |
TTZX
| TTX Company-Centerbeam Flats | 6 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 1 |
WCRC
| Washington Central | 1 |