ACL
| Atlantic Coast Line | 3 |
ATSF
| Atchison Topeka & Santa Fe | 6 |
CRIP
| Chicago Rock Island & Pacific | 1 |
DTI
| Detroit Toledo & Ironton | 3 |
LN
| Louisville & Nashville | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
OKRX
| Oklahoma Railway Museum Ltd | 2 |
SLSF
| Saint Louis-San Francisco | 2 |
UP
| Union Pacific Railroad Company | 2 |