USGS 7 1/2 DAVIS DAM MAPHOUSEHOLDER ROSS GROUP MAP MINES IN KATHERINE SECTION OFUNION PASS DISTRICT 1964LAUSEN CARL GEOLOGY AND ORE DEPOSITS OF THE OATMAN ANDKATHERINE DISTRICTS AZBM BUL 131 1931 P 21 53ARIZONA MINING JOURNAL DEC 15 1921 P 9RAND LENOX AND EDWARD STURGIS THE MINES HANDBOOK 1931 P 319ALSO IN SEC 27 SW QUARTER