BKTY
| Union Pacific Railroad Company | 2 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 8 |
CBQ
| Chicago Burlington & Quincy | 2 |
CC
| Chicago Central & Pacific | 3 |
CCWX
| Coastal Chem Incorporated | 1 |
CGW
| Chicago Great Western | 2 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 2 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 1 |
DRGW
| Denver & Rio Grande Western | 9 |
IAIS
| Iowa Interstate | 1 |
MP
| Missouri Pacific | 3 |
NYC
| New York Central | 1 |
SP
| Southern Pacific | 2 |
TBOX
| TTX Company | 2 |
UP
| Union Pacific Railroad Company | 1 |
UPP
| Union Pacific Passenger | 2 |
WC
| Wisconsin Central | 2 |
WP
| Western Pacific | 2 |