Stored at the New England Electric Railway Hisorical Society in Kennebunkport, ME are two transit vehicles that served the city of Waltham. One being trolley no. 41, a 1901 John Stephenson product that served Waltham from 1901-1928. The car was used in Natick as a diner until 1962, when it was transported to Maine.

Also, a 1948 ACF Brill bus is preserved at the museum. Both items were owned and operated under the Middlesex & Boston Street Railway. Visit trolleymuseum.org to get more information.