AMTK
| Amtrak | 9 |
BAR
| Bangor & Aroostook | 1 |
CACV
| Cooperstown and Charlotte Valley | 1 |
CNJ
| Central Rail Road of New Jersey | 3 |
CO
| Chesapeake & Ohio | 2 |
CSX
| CSX Railroad | 5 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
EBGR
| Eastern Berks Gateway Railroad | 3 |
EL
| Erie Lackawanna | 1 |
LI
| Long Island Rail Road Company | 1 |
LV
| Lehigh Valley | 1 |
MNCR
| Metro North Commuter Railway | 8 |
NCBX
| New Century Rail Transport LLC | 2 |
NS
| Norfolk Southern | 3 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 1 |
NYGL
| New York and Greenwood Lake Railroad | 2 |
NYSW
| New York Susquehanna & Western | 1 |
PPCX
| AAPRCO Register Private Cars | 4 |
PR
| Palmetto Railways | 1 |
PRR
| Pennsylvania Railroad | 5 |
RBMN
| Reading Blue Mountain & Northern | 4 |
RPCX
| Railroad Passenger Car Numbering Bureau | 4 |
SLRS
| SMS Rail Service Incorporated | 11 |
SNC
| Saratoga & North Creek Railway | 1 |
SRC
| Strasburg Railroad | 1 |