I have both volumes of the History of Jerauld County South Dakota.
Volume one: From earliest settlement (1876) to January 1st, 1909 by N.J. Dunham
Volume two: Jan. 1st 1909 to December 31st, 1961, 52 years of progress by Fred N. Dunham
I also have the Making of a Community - A history of Jerauld County to 1980 by the Dunham Historical Society in Wessington Springs, SD. This book has many "family histories" written by family members
I would be glad to do look-ups based on the indexes in all three books. Cheryl