Image Missing: Hearst Museum object titled Black-and-white negative, accession number 15-12039, described as Black and white negative. Site J 5 = 47, San Joaquin County. Lemos Collection metate fragment, two large quartz crystals. May 31, 1939. 2 3/8 square inches. 15-12038. Collector: Gordon W. Hewes. Donor: U.C. Central San Joaquin Valley Survey. Original number: 4.