ANR
| Angelina and Neches River Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 6 |
BN
| Burlington Northern | 3 |
BO
| Baltimore & Ohio | 1 |
CNW
| Chicago & Northwestern | 2 |
CS
| Colorado & Southern | 1 |
DTI
| Detroit Toledo & Ironton | 1 |
FWD
| Fort Worth & Denver | 6 |
KCS
| Kansas City Southern | 2 |
MILW
| Milwaukee Road | 1 |
MKT
| Missouri-Kansas-Texas | 13 |
MP
| Missouri Pacific | 1 |
RSP
| Roscoe Snyder and Pacific Railway | 1 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 1 |
SOO
| Soo Line | 2 |
SP
| Southern Pacific | 6 |
SSW
| St Louis Southwestern (Cotton Belt) | 6 |