Silver Duchess Prospect

BONHAM, H. F., JR., TISCHLER, M. S., AND COOKSLEY, J. W.,JR., 1959, GEOLOGY AND MINERAL RESOURCES OF T.10 N.,R. 14, 15, AND 16 E., S.B.M., SAN BERNARDINO COUNTY,CALIFORNIA: UNPUBLISHED MAP AND REPORT, SOUTHERN PACIFICCO., 16 P.HAZZARD, J. C., 1954, ROCKS AND STRUCTURE OF THE NORTHERNPROVIDENCE MOUNTAINS, SAN BERNARDINO COUNTY, CALIFORNIA,IN JAHNS, R. H., E.D, GEOLOGY OF SOUTHERN CALIFORNIA:CALIFORNIA DIVISION OF MINE BULLETIN 170, CHAPTER 4,P. 27-35, MAP SHEETS.MOYLE, P. R., AND OTHERS, 1986, MINERAL RESOURCES OF THEPROVIDENCE MOUNTAINS STUDY AREA, SAN BERNARDINO COUNTY,CALIFORNIA: U.S. BUREAU OF MINES OPEN-FILE REPORTMLA 47-86, APPENDIX B, NO. 161, P. 302.