AMTK
| Amtrak | 5 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 3 |
CBQ
| Chicago Burlington & Quincy | 1 |
DOTX
| USDOT/Federal Railroad Administration | 2 |
EV
| Everett Railroad | 1 |
HRS
| Holidaysburg and Roaring Spring Railroad Company | 1 |
LN
| Louisville & Nashville | 1 |
METX
| METRA | 2 |
MRLX
| Mid America Rail Car Leasing | 2 |
MTA
| NYC Transit | 1 |
NRHX
| National Railway Historical Society | 2 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 9 |
NYC
| New York Central | 1 |
PPCX
| AAPRCO Register Private Cars | 5 |
PRR
| Pennsylvania Railroad | 5 |
RBBX
| Ringling Bros. and Barnum and Bailey | 28 |
RPCX
| Railroad Passenger Car Numbering Bureau | 4 |
SLRG
| San Luis and Rio Grande Railroad | 1 |
TCRX
| Tennessee Central Railway Musem | 1 |
TYRM
| TYRM | 1 |
UP
| Union Pacific Railroad Company | 1 |
VRIC
| Virginia Rail Investment | 1 |
WATX
| Watco | 3 |
WM
| Western Maryland | 1 |