Muni, eventually, took over the cable car system as well, and it’s still part of the Municipal Railway. This is on California between Stockton and Grant. The spot where the No Parking sign is in the old picture was where the Trafalgar Building, apparently, recently demolished by the time this 1951 photo was taken, was located. Just four years before the vintage picture was taken, the opening scenes from Bob Hope’s ‘My Favorite Brunette’ were filmed here. (Thumbnail image)
San Francisco Film Locations Then & Now 