AARX
| Association of American Railroads | 1 |
BN
| Burlington Northern | 34 |
BO
| Baltimore & Ohio | 1 |
CBQ
| Chicago Burlington & Quincy | 1 |
CC
| Chicago Central & Pacific | 1 |
CO
| Chesapeake & Ohio | 5 |
COER
| Crab Orchard & Egyptian | 10 |
CSX
| CSX Railroad | 2 |
DUPX
| Du Pont De Nemours and Company Incorporated | 1 |
GMO
| Gulf Mobile & Ohio | 1 |
GVNW
| GVNW | 3 |
IC
| Illinois Central | 51 |
ICG
| Illinois Central Gulf | 10 |
ITC
| Illinois Terminal Railroad | 2 |
MKT
| Missouri-Kansas-Texas | 2 |
MP
| Missouri Pacific | 15 |
NP
| Northern Pacific | 3 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 11 |
SLIM
| St Louis, Iron Mountain & Southern | 2 |
SP
| Southern Pacific | 2 |
SPS
| Spokane Portland & Seattle | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 5 |
TRRA
| Terminal RR of St Louis | 2 |