S.D. Codified Laws § 13-59-12
The Lake County Historical Museum building located on the campus of Dakota State University at Madison is the property of the State of South Dakota. The purpose of the Lake County Historical Museum is to house items of historical interest owned, donated or loaned to the Lake County Historical Society of Historical Interest to the State of South Dakota or to the United States of America; to contain offices and headquarters of the Lake County Historical Society, the donor corporation, and a memorial room to honor pioneers selected by it, who have made a significant contribution to the progress of Lake County and the State of South Dakota; and to contain sufficient space to provide educational opportunities for the university commensurate with the cost of maintaining and paying the operational expense of such building as provided in § 13-59-17.
SDCL 13-59-12