ALLN
| Allentown and Auburn Railroad | 2 |
AMTK
| Amtrak | 1 |
APTX
| Air Products and Chemicals Incorporated | 5 |
BO
| Baltimore & Ohio | 2 |
BRW
| Black River And Western | 1 |
BSOR
| Buffalo Southern | 2 |
CMSL
| Cape May Seashore Line | 2 |
CNJ
| Central Rail Road of New Jersey | 2 |
CO
| Chesapeake & Ohio | 1 |
CR
| Conrail | 7 |
CSX
| CSX Railroad | 3 |
DLW
| Delaware Lackawanna & Western | 2 |
DRGW
| Denver & Rio Grande Western | 2 |
ERIE
| Erie Railroad | 5 |
JPBX
| Joint Powers Board (CalTrain) | 2 |
LNE
| Lehigh and New England Ry | 1 |
LV
| Lehigh Valley | 1 |
MEC
| Maine Central | 1 |
MGA
| Monongahela RR | 1 |
NJT
| New Jersey Transit | 1 |
NKP
| Nickel Plate | 2 |
NYSW
| New York Susquehanna & Western | 1 |
PC
| Penn Central | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PRR
| Pennsylvania Railroad | 16 |
RPCX
| Railroad Passenger Car Numbering Bureau | 2 |
RR
| Raritan River | 1 |
SBC
| Ferrocarril Sonora Baja California | 1 |
SLRS
| SMS Rail Service Incorporated | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 1 |
SRNJ
| Southern Railroad Company of New Jersey | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
THB
| Toronto Hamilton & Buffalo | 1 |
WAB
| Wabash | 2 |
WCRL
| West Chester Railroad Company | 1 |
WW
| Winchester & Western | 1 |