The South Dakota Genealogical Society (SDGS) is a state-wide organization made up of genealogists from all areas of South Dakota and across the country. Individual genealogists and local societies are welcome to become members.

The State Archives of the South Dakota State Historical Society collects, appraises, accessions, describes, organizes, preserves, determines significance, and makes available manuscript collections, South Dakota state, county, and town government records, photographs, maps, and other archival materials which have permanent historical and research value.

The South Dakota Library Association (SDLA) is a statewide organization representing libraries, library employees, library trustees, and library supporters. SDLA provides leadership and educational opportunities and supports its members in meeting the challenges of providing quality library service to all South Dakotans.