Snow sweepers were at one time the most common work car on the TTC. S-37 and 11 similar cars were purchased from the Third Avenue Railway System of New York in 1947. Numbered 90 while in New York, S-37 was originally built for the Eastern Mass. Street Railway of Boston, MA in 1920. In 1973, the Ontario Electric Railway Historical Association purchased S-37 from the TTC.
S-37 is pictured here at the Halton County Radial Railway Museum at Milton, Ontario, on August 25, 1974.