Reference | {Deposit:: PA. GEOLOGICAL SURVEY, BULLETIN M26, 1945, PP 1-35.}{Deposit:: PA. GEOLOGICAL SURVEY, ANNUAL REPORT FOR 1886, PART IV, 1887}{Deposit:: 1467-1481.}{Deposit:: U.S. BUREAU OF MINES, R.I. 4436, 1949, PP 1-7.}{Deposit:: FOOSE RM 1945 PA GEOL SUR MINERAL RES REPT M27 PLII P74-85} |