AOK
| Arkansas-Oklahoma Railroad | 3 |
COER
| Crab Orchard & Egyptian | 3 |
GTW
| Grand Trunk Western | 5 |
IBT
| International Bridge and Terminal Company | 2 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NYC
| New York Central | 4 |
SP
| Southern Pacific | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 1 |