- Amherst & Belchertown Railroad
- Athol & Enfield Railroad
- Boston & Albany Railroad (1)
- Boston & Albany Railroad (2)
- Boston & Albany Railroad (3)
- Boston & Albany Railroad (4)
- Boston & Albany Railroad (West of Connecticut River)
- Boston & Albany Railroad (Athol Branch)
- Boston & Maine Railroad
- Central Massachusetts Railroad (1)
- Central Massachusetts Railroad (2)
- Chester & Becket Railroad
- Connecticut River Railroad (1)
- Connecticut River Railroad (2)
- Connecticut River Railroad (3)
- Connecticut River Railroad (Branck Track)
- Hampden Railroad
- Hampshire & Hampden Railroad
- Hartford & Connecticut Western Railroad, Springfield Branch
- Hartford & Springfield Railroad
- Holyoke & Westfield Railroad
- Mount Holyoke Railroad
- New Haven & Northampton Railroad
- New London Northern Railroad (NYNH&H)
- Springfield & New London Railroad
- New York New Haven & Hartford Railroad (1)
- New York New Haven & Hartford Railroad (2)
- Northampton & Springfield Railroad
- Pittsfield & New Haven Railroad
- Southern New England Railroad
- Springfield & Farmington Valley Railroad
- Ware River Railroad
- Ware River Railroad Amended Location
- Western Railroad