South Dakota Codified Laws
Chapter 41C - Unclaimed Property Held By Museums Or Historical Societies
Section 43-41C-1 - Property held by a museum or historical society deemed abandoned.

43-41C-1. Property held by a museum or historical society deemed abandoned.
Any property held by a museum or historical society in the state which is held for ten years or more and to which no person has made claim is deemed to be abandoned and becomes the property of the museum or society, if the museum or society has complied with §§43-41C-2 and 43-41C-3.

Source: SL 1993, ch 328, §1.