Double H Nos. 1 and 2 Mine

ERIC, J. H., 1948, TABULATION OF COPPER PROPERTIES INCALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144,PART 3, P. 305.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. 69, P. 282.TUCKER, W. B., AND SAMPSON, R. J., 1930, LOS ANGELES FIELDDIVISION, SAN BERNARDINO COUNTY: CALIFORNIA DIVISION OFMINES, REPORT XXVI OF THE STATE MINERALOGIST, NO.3, P.235.MINES, REPORT XXVII OF THE STATE MINERALOGIST, NO. 3.,P. 295-296.WRIGHT, L. A., STEWART, R. M., GAY, T. E., JR., ANDHAZENBUSH, G. C., 1953, MINES AND MINERAL DEPOSITS OFSAN BERNARDINO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OFMINES AND GEOLOGY, V. 49, NOS. 1 AND 2, TABLES, P. 35.