[1] The route on Hamilton Avenue was not one of the original franchises granted to the Brooklyn City Rail Road in 1853,[2] but was added soon after.
[4] Eventually the route was operated along Third Avenue south to the 65th Street Depot in Bay Ridge as the 33 Hamilton line.
The detour was in place until a new Hamilton Avenue Bridge was constructed as part of the under-construction connection between the Brooklyn Battery Tunnel and the Belt Parkway.
[7] Ridership dropped in 1942 with the discontinuation of the Hamilton Avenue Ferry, and in 1957 with the Brooklyn Dodgers, who played at Ebbets Field, moved to Los Angeles.
[9] Discontinuing the route, which was used by about 100 daily riders, was estimated to save the New York City Transit Authority $73,000 annually.