ATSF
| Atchison Topeka & Santa Fe | 1 |
AWP
| Atlanta & West Point | 2 |
BN
| Burlington Northern | 2 |
BO
| Baltimore & Ohio | 1 |
CEI
| Chicago & Eastern Illinois | 1 |
CO
| Chesapeake & Ohio | 10 |
CR
| Conrail | 2 |
CRR
| Clinchfield | 3 |
CSX
| CSX Railroad | 1 |
GA
| Georgia Railroad | 2 |
GF
| Georgia & Florida | 1 |
GMSR
| Kansas City Southern | 1 |
ICG
| Illinois Central Gulf | 5 |
KCS
| Kansas City Southern | 1 |
LN
| Louisville & Nashville | 7 |
NS
| Norfolk Southern | 1 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
SAL
| Seaboard Air Line | 2 |
SBD
| Seaboard System | 2 |
SCL
| Seaboard Coast Line | 21 |
SLSF
| Saint Louis-San Francisco | 3 |
SOO
| Soo Line | 1 |
SOU
| Southern | 9 |
SP
| Southern Pacific | 2 |
UP
| Union Pacific Railroad Company | 1 |
WRA
| Western Railway of Alabama | 1 |