BB
| Buckingham Branch | 3 |
BO
| Baltimore & Ohio | 1 |
CO
| Chesapeake & Ohio | 6 |
CR
| Conrail | 3 |
CSX
| CSX Railroad | 4 |
CTR
| Clinton Terminal Railroad Company | 1 |
DB
| Deutsche Bahn | 1 |
DCLR
| Delaware Coast Line RR Co | 2 |
ESHR
| Eastern Shore Railroad | 1 |
FN
| FN | 1 |
GBRY
| Gettysburg Railway. | 1 |
GWR
| Great Western Railway Company | 1 |
ICG
| Illinois Central Gulf | 1 |
LN
| Louisville & Nashville | 1 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 4 |
NW
| Norfolk & Western | 7 |
ODCX
| Old Dominion Chapter | 1 |
ODRM
| Old Dominion Chapter | 1 |
PRR
| Pennsylvania Railroad | 1 |
RFP
| Richmond Fredericksburg & Potomac | 2 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 5 |
SV
| Shenandoah Valley Railroad | 1 |
TWCX
| Tidewater Chapter, NRHS | 3 |
UP
| Union Pacific Railroad Company | 1 |
USAX
| United States Army | 5 |
USN
| United States Navy | 1 |
VBR
| Virginia Blue Ridge Railway | 2 |
VLIX
| Vintage Locomotives Inc | 2 |
WM
| Western Maryland | 1 |
WWRC
| Wilmington and Western Railroad | 1 |