AAR
| Association of American Railroads | 2 |
AMTK
| Amtrak | 6 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BN
| Burlington Northern | 1 |
CBQ
| Chicago Burlington & Quincy | 1 |
DOT
| DOT | 1 |
EL
| Erie Lackawanna | 1 |
ICGX
| ICGX | 1 |
MILW
| Milwaukee Road | 1 |
MTSX
| MAX TRANSPORTATION SERVICE | 1 |
NH
| New Haven | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
SP
| Southern Pacific | 1 |
TCSR
| Norfolk Southern Corporation | 2 |
UPP
| Union Pacific Passenger | 1 |
WUTX
| WUTX | 1 |