The Ada Hayden Papers (1864-2007) include biographical information, diplomas and certificates, illustrations, list of publications, and a small amount of general correspondence and correspondence concerning the Hayden family as well as a bibliography of early botanists. The collection also contains photographs of the Hayden Prairie, animals, plants, Ledges State Park, the Mississippi River, Hayden's family, self-portraits, prairies, and the Skunk River. In addition, the papers include Hayden's scripts of her radio talks regarding different state parks, botany, history, and prairie restoration. There are also writings by and about Ada Hayden, which include articles, poems, and memorials. This series contains Hayden's family and personal correspondence, as well as Hayden Prairie photographs, illustrations, and a list of publications.