APTX
| Air Products and Chemicals Incorporated | 3 |
BSCX
| Bethlehem Steel Corporation | 3 |
CSAO
| Conrail Shared Assets | 1 |
DODX
| Department Of Defense | 1 |
DSEX
| East Carbon Development Company | 1 |
ITTX
| TTX Company | 1 |
LI
| Long Island Rail Road Company | 1 |
NJT
| New Jersey Transit | 1 |
PRR
| Pennsylvania Railroad | 1 |
QTTX
| TTX Company | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 3 |
RBMN
| Reading Blue Mountain & Northern | 3 |
RDG
| Reading Railroad | 2 |
SIRT
| Staten Island Rapid Transit | 1 |
WPYR
| White Pass & Yukon Route | 3 |