B (Los Angeles Railway)

The B was a streetcar line in Los Angeles, California. It was operated by the Los Angeles Railway from 1920 to 1949, originally running from Ramona Boulevard and Miller Street in East Los Angeles to Ascot Avenue and 51st Street.
History.
Brooklyn and Ascot Lines (1895–1911).
The first Brooklyn line was built in 1895 by the Los Angeles Consolidated Railway as a horsecar road. It terminated at the intersection of Brooklyn Avenue and Evergreen Avenue. The line was electrified the following year and rerouted downtown. In 1902 the route was bought by the Pacific Electric Railway to be standard gauged, but never was. 
Following the Great Merger of 1911, control of the route returned to the Los Angeles Railway. They extended the route north and east along Evergreen and Wabash Avenues to the city limits in 1915. 
Expansion and later removal (1911–1949).
The line was given the designation B and rerouted in 1920. Tracks on 9th Street were taken over by the N Line and the remaining service was merged with the Ascot Line, a previously unconnected route which ran by way of Main Street, 12th Street, Hooper Avenue, a private right-of-way alongside the Santa Monica Air Line, and Ascot Avenue. (A section of this, between Adams Boulevard and 41st Street, has since been filled in.)
In 1922, the route was extended northeast along the newly built Harrison Street (later Ramona Boulevard, and later still City Terrace Drive) to Miller Street in East Los Angeles. In 1949 the route was removed altogether, replaced by trolley bus service.