South Dakota State Historical Society opened as a home for all archives, a museum, and their administrative offices. In 2014, the South Dakota State Historical Society published an annotated version of Wilder's autobiography, titled "Pioneer Girl: The Annotated Autobiography", by Laura Ingalls Wilder, Pamela Smith Hill (Editor). In addition to the State Archives, the Society operates the Museum of the South Dakota State Historical Society, the State Historic Preservation Office, the South Dakota State Historical Society Press, and an archaeological research center. South Dakota State Historical Society The South Dakota State Historical Society is South Dakota's official state historical society and is located in Pierre,
South Dakota Highway 21 was completely concurrent with US 81, which was also established at this time. This concurrency extended from the Nebraska state line to the North Dakota state line. By 1935, all of SD 21 was decommissioned except for its current alignment. South Dakota Highway 21 South Dakota Highway 21 (SD 21) is a state highway in the eastern part of the U.S. state of South Dakota. It connects Lake Norden and Hayti, completely within the south-central part of Hamlin County. SD 21 originally extended from the Nebraska state line to the North Dakota state line, completely concurrent with U.S. Route 81