AMTK
| Amtrak | 3 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
CNJ
| Central Rail Road of New Jersey | 11 |
GBW
| Green Bay & Western | 1 |
LI
| Long Island Rail Road Company | 1 |
NS
| Norfolk Southern | 3 |
PC
| Penn Central | 8 |
PRR
| Pennsylvania Railroad | 3 |
PRSL
| Pennsylvania Reading Seashore | 1 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RDG
| Reading Railroad | 13 |
REX
| Railway Express Agency, Inc. | 2 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 6 |
WWRC
| Wilmington and Western Railroad | 1 |