ACEX
| Altamont Commuter Express | 1 |
AFRX
| AF Railway Industries Incorporated | 3 |
ALLN
| Allentown and Auburn Railroad | 2 |
ARC
| Alexander Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BAR
| Bangor & Aroostook | 3 |
BDRV
| Belvidere & Delaware Railroad | 24 |
BFC
| Bellefonte Central | 1 |
BLE
| Bessemer & Lake Erie | 1 |
BM
| Boston & Maine | 12 |
BML
| Belfast & Mooshead Lake | 1 |
BN
| Burlington Northern | 1 |
BO
| Baltimore & Ohio | 22 |
BRW
| Black River And Western | 8 |
CLP
| Clarendon and Pittsford | 1 |
CMRR
| Catskill Mountain Scenic | 11 |
CMSL
| Cape May Seashore Line | 4 |
CN
| Canadian National Railways | 1 |
CNJ
| Central Rail Road of New Jersey | 22 |
CO
| Chesapeake & Ohio | 6 |
CP
| Canadian Pacific Railway | 5 |
CPA
| COUDERSPORT & PORT ALLEGHENY RAILROAD | 1 |
CR
| Conrail | 31 |
CV
| Central Vermont | 1 |
DH
| Delaware & Hudson | 28 |
DL
| Delaware-Lackawanna Railroad Company | 4 |
DLW
| Delaware Lackawanna & Western | 13 |
DRGW
| Denver & Rio Grande Western | 4 |
DURR
| DURR | 1 |
EL
| Erie Lackawanna | 5 |
EPRY
| East Penn Railway | 2 |
ERIE
| Erie Railroad | 28 |
EV
| Everett Railroad | 3 |
FGLK
| Finger Lakes Railway | 1 |
GMRC
| Green Mountain RR | 1 |
GT
| GT | 2 |
GTW
| Grand Trunk Western | 1 |
GVT
| GVT | 1 |
HBTM
| HBTM | 1 |
IHB
| Indiana Harbor Belt | 1 |
IRN
| Ironton RR | 1 |
KKRR
| Knox and Kane Railroad Company | 1 |
LCM
| Lake Champlain & Moriah | 1 |
LHR
| Lehigh & Hudson River | 4 |
LNE
| Lehigh and New England Ry | 7 |
LSX
| LSX | 1 |
LV
| Lehigh Valley | 21 |
MBTX
| MBTX | 1 |
MCC
| MCC | 4 |
ME
| Morristown & Erie Railroad | 27 |
MEC
| Maine Central | 18 |
MHWA
| Mohawk Adirondack and Northern Railroad | 1 |
MNJ
| Middletown & New Jersey Railroad | 4 |
MPA
| Maryland and Pennsylvania Railroad | 2 |
MSHC
| MSHC | 4 |
MTA
| NYC Transit | 1 |
NB
| NB | 1 |
NCBX
| New Century Rail Transport LLC | 1 |
NCRA
| Northern Central Railcar Association | 4 |
NH
| New Haven | 3 |
NHRR
| New Hope and Ivyland Rail Road | 3 |
NJT
| New Jersey Transit | 6 |
NJTR
| NJ Transit Rail Operations | 5 |
NKP
| Nickel Plate | 1 |
NSHR
| North Shore | 1 |
NYC
| New York Central | 11 |
NYOW
| New York, Ontario & Western | 8 |
NYSW
| New York Susquehanna & Western | 7 |
PC
| Penn Central | 6 |
PJRL
| Penn Jersey Rail Lines Incorporated | 2 |
PLE
| Pittsburgh & Lake Erie | 1 |
PLLX
| Plymouth And Lincoln Railroad Corp | 1 |
PRR
| Pennsylvania Railroad | 74 |
PS
| Pittsburg and Shawmut Railroad Company | 1 |
PW
| Providence and Worcester | 2 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RCLX
| Macquarie Rail Inc | 8 |
RDG
| Reading Railroad | 25 |
RHSX
| CentralNew York Chapter NRHS | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
RR
| Raritan River | 4 |
RUT
| Vermont Railway Incorporated | 4 |
SCL
| Seaboard Coast Line | 1 |
SIH
| SIH | 1 |
SNC
| Saratoga & North Creek Railway | 2 |
SOO
| Soo Line | 3 |
SOU
| Southern | 1 |
SRC
| Strasburg Railroad | 7 |
SRNJ
| Southern Railroad Company of New Jersey | 5 |
TVRM
| Tennessee Valley | 1 |
UD
| UD | 3 |
UP
| Union Pacific Railroad Company | 2 |
VGN
| Virginian Railway | 1 |
VTR
| Vermont Railway | 1 |
WAB
| Wabash | 3 |
WCRL
| West Chester Railroad Company | 2 |
WE
| Wheeling & Lake Erie | 1 |
WM
| Western Maryland | 2 |
WP
| Western Pacific | 1 |
WWRC
| Wilmington and Western Railroad | 1 |