BN
| Burlington Northern | 5 |
CBQ
| Chicago Burlington & Quincy | 2 |
CNW
| Chicago & Northwestern | 2 |
CRIP
| Chicago Rock Island & Pacific | 7 |
DSRC
| Dakota Southern Railway Company | 1 |
GN
| Great Northern | 2 |
ICG
| Illinois Central Gulf | 3 |
MILW
| Milwaukee Road | 2 |
MNVA
| Minnesota Valley | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOO
| Soo Line | 1 |