BRMX
| Berkshire Railway Museum Inc | 4 |
CSX
| CSX Railroad | 1 |
GMRC
| Green Mountain RR | 1 |
MBTA
| Massachusetts Bay Transit Authority | 7 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 3 |
MWCR
| MWCR | 5 |
PVRR
| Pioneer Valley Railroad Company Incorporated | 1 |
PW
| Providence and Worcester | 2 |
SLRG
| San Luis and Rio Grande Railroad | 12 |