BN
| Burlington Northern | 61 |
CNW
| Chicago & Northwestern | 3 |
DRGW
| Denver & Rio Grande Western | 5 |
MILW
| Milwaukee Road | 1 |
MP
| Missouri Pacific | 3 |
MRL
| Montana Rail Link | 7 |
UP
| Union Pacific Railroad Company | 12 |
UPP
| Union Pacific Passenger | 6 |
WAMX
| Webb Asset Management | 2 |