Precambrian and Paleozoic Geology and Ore Deposits in the Midcontinent RegionJames W. Baxter, Eva B. Kisvarsanyi, Richard D. Hagni, James C. Bradbury, Paul E. Gerdemann · First published 2013Open the Tome
Sediment-hosted Pb-Zn-Ba deposits of the mid-continentRichard D. Hagni · First published 1986Open the Tome