AMTK
| Amtrak | 3 |
APTX
| Air Products and Chemicals Incorporated | 12 |
AWXX
| East Carbon development Company | 1 |
BO
| Baltimore & Ohio | 1 |
BVRY
| Brandywine Valley Railroad Company | 1 |
CP
| Canadian Pacific Railway | 1 |
DSEX
| East Carbon Development Company | 1 |
HTTX
| TTX Company | 1 |
ITTX
| TTX Company | 2 |
KRL
| Kasgro Rail Lines | 5 |
LV
| Lehigh Valley | 1 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
MTTX
| TTX Company | 2 |
NJT
| New Jersey Transit | 1 |
NYC
| New York Central | 6 |
OTTX
| TTX Company | 34 |
PRR
| Pennsylvania Railroad | 2 |
PTTX
| TTX Company | 10 |
QTTX
| TTX Company | 6 |
RBBX
| Ringling Bros. and Barnum and Bailey | 71 |
RDG
| Reading Railroad | 3 |
RTTX
| TTX Company | 3 |
SOU
| Southern | 2 |
TTHX
| TTX Company - Flat Cars | 5 |
TTX
| TTX Company | 1 |
WCRL
| West Chester Railroad Company | 2 |
WM
| Western Maryland | 1 |
WW
| Winchester & Western | 2 |
XTTX
| TTX Company | 3 |