This collection consists of historical sketches and county histories for South Dakota counties, dating from 1901 to 1963, with some undated materials. The records include typed and printed narratives documenting local history, settlement, county development, civic institutions, community identity, and regional change across the state. Of particular note are histories of Lyman County from 1888 to 1906, Custer County and the City of Custer, “Indian Life in Haakon County,” and multiple versions of Campbell and Stanley County histories. The collection is significant for its broad geographic coverage and its value as a source for studying South Dakota local history, county formation, settlement patterns, and the ways communities recorded their own pasts during the early and mid-twentieth century.