| Unidentified photographer California Geological Survey party near Mount Diablo. 1862 Salt print Bancroft Library, University of California Berkeley BANC PIC 1954.008 ser.1:140, Local Call Number: POR: California Geological Survey:5 LL/102635 Includes C. Averill, William Brewer, W.M. Gabb, Hoffmann, Schmidt (a cook).
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