As Iowa's statutorily-mandated repository for Iowa's archaeological collections, OSA houses over four million objects from about 14,000 archaeological sites in Iowa. The OSA archive manages nearly 300,000 total records, including books, journals, field notes, and photographs. Numerous comparative and teaching collections are available for archaeologists, educators, and researchers.
Documents including archaeological and other scientific reports, books, conference papers, manuscripts, journal articles, newspaper articles, and photographs.