Main routes generally still existed in 1976.
Brunswick Transportation Co. - operated 1959-1979
Original route: Portland-Berlin
(acquired from Greyhound)
1959-1964 was Maine Transit Corp.
Bus companies generally listed in the July 1942 Russell's Guide or the 1952 Mass Transportation's Directory, and their predecessor and successor companies. This list is somewhat arbitrary and provides a general overview.
Checker Cab Co. - operated until 1957
Original route: Manchester NH-Portland ME
Costello Bus Lines - operated until 1949 (to Interstate Passenger Service/below)
Original route: Berlin-Chocorua-Laconia/Sanbornville
Granite Stages - operated until 1948 (to Vermont Transit Co./previous page)
Original route: Bellows Falls VT-Peterborough-Boston
1948-1949 service suspended
Interstate Passenger Service - operated 1942-1957
Original route: Wolfeboro-Rochester NH-Boston