ATSF
| Atchison Topeka & Santa Fe | 1 |
BO
| Baltimore & Ohio | 7 |
CIL
| Chicago Indianapolis & Louisville (Monon | 1 |
CMPA
| Madison Railroad Division of City of Mad | 3 |
CO
| Chesapeake & Ohio | 5 |
CR
| Conrail | 1 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 6 |
IC
| Illinois Central | 6 |
ICG
| Illinois Central Gulf | 4 |
LIRC
| Louisville & Indiana | 1 |
LN
| Louisville & Nashville | 29 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 1 |
NKP
| Nickel Plate | 2 |
NW
| Norfolk & Western | 1 |
PAL
| Paducah & Louisville | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
SBD
| Seaboard System | 3 |
SCL
| Seaboard Coast Line | 6 |
SOU
| Southern | 5 |
TC1
| Tennessee Central | 1 |
TENN
| Tennessee Railway Company | 1 |
TTI
| Transkentucky Transportation | 1 |
USA
| USA | 1 |
USAX
| United States Army | 1 |