BO
| Baltimore & Ohio | 1 |
CNW
| Chicago & Northwestern | 2 |
CRIP
| Chicago Rock Island & Pacific | 2 |
GMO
| Gulf Mobile & Ohio | 3 |
IC
| Illinois Central | 3 |
ITC
| Illinois Terminal Railroad | 2 |
MILW
| Milwaukee Road | 3 |
MONO
| MONO | 1 |
PRR
| Pennsylvania Railroad | 1 |
TPW
| Toledo Peoria & Western | 1 |
WAB
| Wabash | 1 |