Dakota Territorial Museum is operated by the Yankton County Historical Society. The Yankton County Historical Society through the Dakota Territorial Museum exists to preserve, protect, interpret, and educate the public about the heritage and development of the city and county of Yankton, and the surrounding areas.
The Museum features exhibits on Dakota Territory history as well as "Heritage Park", a collection of actual buildings from early days of settlement in the area.
The Museum is also in the middle of a large-scale renovation of the Mead Building, a very important building in the history of Yankton and South Dakota. More information on this project may be found at www.meadbuilding.org.