Gold Districts Of California Bulletin 193 By William Clark Hardcover 1970 w/ Map Autographed and signed by William Clark California Division of Mines and Geology Ferry Building, San Francisco, 1970 Map housed in pocket at rear of book has common folding creases but no holes or tears.  Map is very large and measures 40 in x 44 inches This bulletin is an overall guide to the gold deposits in California. Although a vast number of publications have been written on gold and gold mining in California, there is no single report or treatise on all of the known gold-bearing districts in the state.