ABC
| Atlanta Birmingham & Coast | 3 |
ACL
| Atlantic Coast Line | 6 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
CG
| Central Of Georgia | 2 |
LN
| Louisville & Nashville | 5 |
SAL
| Seaboard Air Line | 1 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 2 |
SLSF
| Saint Louis-San Francisco | 2 |
SOU
| Southern | 22 |
TSSX
| U.S. Dept. of Energy Albuquerque Operations Office | 1 |
UP
| Union Pacific Railroad Company | 2 |
WRA
| Western Railway of Alabama | 1 |