TramsRecollections: Sunderland Trams in the 1950s

In this 85th volume: We travel back to the streets of Sunderland in the 1950s Sunderland's trams had an appeal to tram enthusiasts that was as great as any other British system. Possibly it was the fact that many were second-hand from other systems, or was it their (almost unique) pantographs in their later years?