Cal State Document
Gold Districts of California: California Gold Discovery to Statehood. Sesquicentennial Edition.
Hard copy includes large color map: "Map of California Showing Location of Gold Districts." This map was not scanned for this PDF, but may be accessed in the Golden Gate University Law Library.
Department of Conservation, Division of Mines and Geology and Clark, William B., "Gold Districts of California" (1998). California Agencies. 257.