AA
| Ann Arbor | 6 |
AC
| Algoma Central | 1 |
CM
| Central Montana Rail Incorporated | 1 |
CMGN
| Central Michigan RR | 2 |
CMR
| Indiana Rail Road Company | 1 |
CN
| Canadian National Railways | 21 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 14 |
CP
| Canadian Pacific Railway | 3 |
CR
| Conrail | 1 |
CSC
| CSC | 1 |
CSX
| CSX Railroad | 2 |
DM
| Detroit & Mackinac | 4 |
DMX
| DMX | 1 |
DT
| Decatur Junction Railway Company | 1 |
DTS
| Detroit & Toledo ShoreLine | 3 |
GREX
| Georgetown Rail Equipment Company | 1 |
GTW
| Grand Trunk Western | 15 |
HESR
| Huron and Eastern | 2 |
HMIX
| Henkels and McCoy Inc | 1 |
J
| J | 1 |
LMIX
| Loram Maintenance of Way Inc. | 3 |
LORA
| LORA | 5 |
LR
| LR | 1 |
RWCX
| RWC Incorporated | 2 |
SBV
| SBV | 1 |
SM
| St. Marys Railroad | 1 |
SRBC
| SRBC | 1 |
SSI
| SSI | 1 |
THB
| Toronto Hamilton & Buffalo | 3 |
VKOR
| VKOR | 2 |
WC
| Wisconsin Central | 1 |
WM
| Western Maryland | 1 |
XXX
| XXX | 1 |