 During its period of municipal ownership, 1919–1951, Birney-type cars made up the entire fleet, with a total of just five to seven cars (numbered in the range 20–26) on the active roster at any time.It was the last all-Birney streetcar system in North America.By the end of service in 1951, the Fort Collins Municipal Railway was the last streetcar system in the U.S. to use any Birney cars.