BN
| Burlington Northern | 2 |
CAGY
| Columbus & Greenville Railway | 18 |
CG
| Central Of Georgia | 1 |
GTRA
| Golden Triangle Railroad | 5 |
IC
| Illinois Central | 15 |
ICG
| Illinois Central Gulf | 16 |
MKT
| Missouri-Kansas-Texas | 6 |
MP
| Missouri Pacific | 5 |
MSRC
| Kansas City Southern | 4 |
MSRW
| Mississippian Railway Cooperative Incorporated | 2 |
NKP
| Nickel Plate | 1 |
NW
| Norfolk & Western | 2 |
OCG
| OCG | 1 |
PC
| Penn Central | 1 |
SLSF
| Saint Louis-San Francisco | 4 |
SOU
| Southern | 8 |