AMTK
| Amtrak | 9 |
AOSX
| Age Of Steam, Ltd | 4 |
BO
| Baltimore & Ohio | 5 |
CBQ
| Chicago Burlington & Quincy | 27 |
CO
| Chesapeake & Ohio | 10 |
CP
| Canadian Pacific Railway | 2 |
CRC
| CRC | 2 |
CRR
| Clinchfield | 2 |
CSX
| CSX Railroad | 1 |
CTVX
| Cleveland Terminal and Valley Railway Incorporated | 43 |
CVSR
| Cuyahoga Valley Scenic RR | 66 |
DLW
| Delaware Lackawanna & Western | 4 |
EL
| Erie Lackawanna | 2 |
ERIE
| Erie Railroad | 2 |
FLNX
| R.P. Flynn Incorporated d/b/a Ohio Railway Supply | 3 |
HVSR
| Hocking Valley Scenic | 8 |
HVSX
| HVSX | 1 |
HZGX
| Herzog Contracting Corporation | 3 |
IMRX
| IMRX | 2 |
LTEX
| Larry''s Truck Electric | 1 |
LWVX
| Lake Shore Railway Association Inc. | 20 |
MARC
| Maryland Transit Administration | 11 |
MRLX
| Mid America Rail Car Leasing | 17 |
NKP
| Nickel Plate | 18 |
NRHX
| National Railway Historical Society | 3 |
OHCR
| Ohio Central | 12 |
PRR
| Pennsylvania Railroad | 2 |
RBBX
| Ringling Bros. and Barnum and Bailey | 2 |
REX
| Railway Express Agency, Inc. | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 21 |
SP
| Southern Pacific | 2 |
TVRM
| Tennessee Valley | 4 |
UP
| Union Pacific Railroad Company | 5 |
WMSR
| Western Maryland Scenic | 1 |