Although absent or equivocal in this 1939 aerial, top, the school location is identifiable in a 1950 version, bottom, green arrow. Canyon Store and post office, black arrow; position of wigwag signal, orange arrow; Pinehurst (Redwood Canyon) Road, blue arrow; Canyon SN shelter, white arrow. Top, BUT BUU-283-80, July 30, 1939; Bottom, BUU-12G-20, May 10, 1950.
L59-50-USDA, AAA, Western Division Laboratories, Courtesy EBMUD and East Bay Regional Park District,
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