BCOL
| Canadian National Railways | 1 |
BN
| Burlington Northern | 1 |
BO
| Baltimore & Ohio | 3 |
CEI
| Chicago & Eastern Illinois | 2 |
CG
| Central Of Georgia | 1 |
CHW
| Chesapeake Western | 1 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 3 |
CSX
| CSX Railroad | 8 |
DUPX
| Du Pont De Nemours and Company Incorporated | 1 |
EEC
| East Erie Commercial Railroad | 2 |
FGER
| Fruit Growers Express Company | 1 |
GATX
| General American Marks Company | 1 |
GMRC
| Green Mountain RR | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
HS
| H and S Railroad Company | 2 |
LN
| Louisville & Nashville | 1 |
LVRC
| Lamoille Valley | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
MP
| Missouri Pacific | 1 |
NERR
| Nashville and Eastern | 1 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 4 |
PAL
| Paducah & Louisville | 1 |
PRR
| Pennsylvania Railroad | 1 |
SBD
| Seaboard System | 2 |
SCL
| Seaboard Coast Line | 2 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
WCCL
| Wisconsin Central | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 2 |
WM
| Western Maryland | 1 |