AERC
| Albany and Eastern Railroad Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 2 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CP
| Canadian Pacific Railway | 1 |
DWC
| Canadian National Railways | 1 |
FCEN
| Florida Central | 1 |
GNRR
| Georgia Northeastern | 1 |
NOKL
| Northwestern Oklahoma | 1 |
SERA
| Sierra Northern Railway | 2 |
TTZX
| TTX Company-Centerbeam Flats | 2 |
WCRC
| Washington Central | 1 |