Here's a cool artifact: a Dudley Stone School class photo, taken in 1953.
The historic Dudley Stone building is located at 1250 Waller Street in San Francisco. You can read about its history, namesake, and various incarnations (as the William R. De Avila School, and ultimately the Chinese Immersion School at De Avila) here. According to the changeable letter board, this was Dudley Stone School, Room 207, Grade L6, and taken on September 29, 1953.
And, of course, it was snapped by Plymouth Pictures / Golden Gate Studio, formerly of 1007 Market Street. As you may remember, they had a monopoly on the San Francisco class photo racket for quite some time.
Many thanks to anyone who can tell us why the front-row children are wearing seat belts.