Chicago Transit Authority elevated streetcar stops at a station for waiting passengers which include Jim Fredrickson's scout troop at Chicago, Illinois on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: streetcar

Two Chicago Transit Authority elevated trains pictured from the platform level in Chicago, Illinois on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: streetcar

Chicago Transit Authority elevated streetcar approaching a station platform on the "A LAKE" line at Chicago, Illinois in 1964. Photo by J.M. Fredrickson. Other Subject Classes: streetcar

Photographs of urban rail public transportation that generally has a lower capacity and lower speed than heavy rail systems.