CC
| Chicago Central & Pacific | 1 |
CGW
| Chicago Great Western | 2 |
CNW
| Chicago & Northwestern | 5 |
CO
| Chesapeake & Ohio | 1 |
CR
| Conrail | 5 |
CRIP
| Chicago Rock Island & Pacific | 1 |
IANR
| Iowa Northern Ry | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
ICE
| Iowa Chicago and Eastern | 1 |
RI
| RI | 1 |