BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 3 |
FURX
| First Union Rail | 3 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
HLSC
| Hampton Railway Incorporated | 11 |
MMA
| Montreal, Maine & Atlantic | 2 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 1 |
TTZX
| TTX Company-Centerbeam Flats | 1 |
UP
| Union Pacific Railroad Company | 2 |
WCRC
| Washington Central | 5 |