One of the most used collections at San Francisco Public Library is the "San Francisco Office of Assessor-Recorder Photographs", which contains over 94,000 photographs of properties in the city taken by the Office of Assessor-Recorder from the late 1940s to the early 2000s. These photographs reveal the history and architecture of San Francisco, as well as the lives of its residents and businesses. We just found these hilarious pics of some kids who crashed a photo shoot on 31St Avenue between Ju