| Reference | {Deposit:: F1 < CALVIN, SAMUEL, 1895, GEOLOGY OF ALLAMAKEE COUNTY, IOWA: IOWA GEOLOGICAL SURVEY ANNUAL REPORT, V. 4, P. 35-120.}{Deposit:: HEYL, A. V., FIELD NOTES}{Deposit:: F3 < PESONEN, P. E., 1949, INVESTIGATION OF THE WAUKON IRON DEPOSIT, ALLAMAKEE COUNTY, IOWA: U.S. BUREAU OF MINES REPORT INVESTIGATIONS 4479, 22 P.} |