ACL
| Atlantic Coast Line | 1 |
AMTK
| Amtrak | 1 |
ATSF
| Atchison Topeka & Santa Fe | 7 |
AVCX
| AVCX | 4 |
BN
| Burlington Northern | 5 |
CBQ
| Chicago Burlington & Quincy | 1 |
DCCX
| McDonnell Douglas Corporation | 1 |
GN
| Great Northern | 2 |
REX
| Railway Express Agency, Inc. | 1 |
SP
| Southern Pacific | 1 |
UP
| Union Pacific Railroad Company | 2 |