ATSF
| Atchison Topeka & Santa Fe | 4 |
CBQ
| Chicago Burlington & Quincy | 1 |
CKRY
| Central Kansas Railway Incorporated | 1 |
CRR
| Clinchfield | 1 |
GA
| Georgia Railroad | 1 |
IHB
| Indiana Harbor Belt | 2 |
MP
| Missouri Pacific | 1 |
NW
| Norfolk & Western | 3 |
SCL
| Seaboard Coast Line | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 5 |
UP
| Union Pacific Railroad Company | 1 |
WAB
| Wabash | 2 |