CNW
| Chicago & Northwestern | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
NCRC
| Nebraska Central | 1 |
PCC
| Palouse River and Coulee City | 6 |
POVA
| Pend Oreille Valley Railroad | 1 |
SI
| Union Pacific Railroad Company (Spokane International) | 1 |
UP
| Union Pacific Railroad Company | 2 |