ALLN
| Allentown and Auburn Railroad | 4 |
AMTK
| Amtrak | 2 |
APTX
| Air Products and Chemicals Incorporated | 4 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BDRV
| Belvidere & Delaware Railroad | 5 |
BO
| Baltimore & Ohio | 6 |
CMSL
| Cape May Seashore Line | 2 |
CN
| Canadian National Railways | 1 |
CNJ
| Central Rail Road of New Jersey | 4 |
CR
| Conrail | 77 |
DH
| Delaware & Hudson | 1 |
DL
| Delaware-Lackawanna Railroad Company | 4 |
DLW
| Delaware Lackawanna & Western | 7 |
DRG
| DRG | 1 |
EL
| Erie Lackawanna | 2 |
ERIE
| Erie Railroad | 21 |
EV
| Everett Railroad | 1 |
GA
| Georgia Railroad | 1 |
GVT
| GVT | 1 |
LNE
| Lehigh and New England Ry | 1 |
LV
| Lehigh Valley | 8 |
ME
| Morristown & Erie Railroad | 1 |
MEC
| Maine Central | 3 |
MHWA
| Mohawk Adirondack and Northern Railroad | 1 |
NJTR
| NJ Transit Rail Operations | 1 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 4 |
PRR
| Pennsylvania Railroad | 32 |
RBMN
| Reading Blue Mountain & Northern | 24 |
RDG
| Reading Railroad | 2 |
SBD
| Seaboard System | 1 |
UP
| Union Pacific Railroad Company | 1 |
VGN
| Virginian Railway | 1 |
WAB
| Wabash | 3 |
WCRL
| West Chester Railroad Company | 2 |
WM
| Western Maryland | 1 |