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  1. By: Eastman, Charles Rochester, - Iowa Geological Survey.
    Publication info: Des Moines, Iowa Geological Survey, 1908
    Holding Institution: Smithsonian Libraries and Archives
  2. By: Iowa Geological Survey. - St. John, O. H. (Orestes Hawley) - White, Charles A. (Charles Abiathar),
    Publication info: [Iowa City], [State Geologist], [1867]
    Holding Institution: Smithsonian Libraries and Archives
    BHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection
  3. By: Iowa Geological Survey. - Hall, James, - Whitney, J. D. (Josiah Dwight),
    Publication info: Des Moines, Published by authority of the Legislature of Iowa, 1858
    Holding Institution: University of California Libraries
  4. By: Iowa Geological Survey. - White, Charles A. (Charles Abiathar), - Parvin, Theodore Sutton, - St. John, O. H. (Orestes Hawley) - Emery, Rush. - Iowa Geological Survey.
    Publication info: Des Moines, Printed and Pub. by Mills, 1870
    Holding Institution: Smithsonian Libraries and Archives