Official Web site of MBTA.
In 1964, the Massachusetts Bay Transportation Authority (MBTA) became responsible for all public transportation in the Boston metropolitan area, first by taking over the Metropolitan Transit Authority. Several streetcar and trolleybus lines continue to operate.
In 1968, MBTA expanded significantly into the suburbs, by acquiring the Eastern Massachusetts Street Railway. And in 1972, MBTA acquired the Middlesex & Boston Street Railway.
STREET RAILWAY COMPANIES
Many individual streetcar companies were eventually consolidated into fewer larger companies, prior to the introduction of buses.
TRANSIT ROUTES - PAST AND PRESENT
How the electric railways and private bus companies evolved into today's bus and rail system in the Boston area.
Includes miscellaneous companies with routes evolving to MBTA, and routes either remaining private and subsidized by MBTA, or discontinued.
Map showing connecting electric railways of the past, allowing for continuous journeys beyond Boston into outlying New England.
Massachusetts Bay Transportation Authority (Wikipedia)
MBTA Bus (Wikipedia)
The Bus Rosters Page
Chicago Transit & Railfan Web Site