Reference | {Deposit:: SMITH, R.A., 1915, LIMESTONES OF MICHIGAN; PUBLICATION 21, GEOLOGICAL SERIES 17, PP. 151-152, 206,234, 240-241, 260-261, 286-87}{Deposit:: MICHIGAN GEOLOGICAL SURVEY DIVISION FILES, CHIPPEWA COUNTY, DRUMMOND ISLAND DOLOMITE, BETHLEHEM MINE.} |