Image Missing: Hearst Museum object titled Black-and-white negative, accession number 15-11672, described as Black and white negative. McGillivray site (Sohneck 142) Mokelumne R. San Joaquin County, California. Trench A., looking north. August 1937. 3 1/2 x 4 1/2 inches. 15-11671 to 15-11672. R.F. Heizer.