Scope and Content "The Pacific Dock and Terminal Company," George N. Adams, negative photostat showing shoreline and sloughs from Rancho patent maps (1939)"The Pacific Dock and Terminal Company," negative photostat showing mouth of San Gabriel River on coast charts of 1859 and 1872 (undated)"Map of the mouth of San Gabriel River, plotted from the Official Field Notes of the United States General Land Office, which agrees with the US Patent," George N. Adams, negative photostat...