ALCO
| AMERICAN LOCOMOTIVE COMPANY | 1 |
ATSF
| Atchison Topeka & Santa Fe | 13 |
CBQ
| Chicago Burlington & Quincy | 3 |
CN
| Canadian National Railways | 2 |
CP
| Canadian Pacific Railway | 2 |
CRIP
| Chicago Rock Island & Pacific | 1 |
DRGW
| Denver & Rio Grande Western | 3 |
EMDX
| EMD | 6 |
GN
| Great Northern | 6 |
IC
| Illinois Central | 1 |
MILW
| Milwaukee Road | 18 |
NYC
| New York Central | 7 |
PRR
| Pennsylvania Railroad | 13 |
PULL
| Pullman | 1 |
SP
| Southern Pacific | 5 |
UP
| Union Pacific Railroad Company | 8 |
WP
| Western Pacific | 3 |