South Dakota State Census, 1915 Description Name index and images of census cards from the 1915 South Dakota State Census acquired from the South Dakota State Historical Society. How to Use this Collection » Search Collection View Images in this Collection Browse through 613769 images Citing this Collection "South Dakota State Census, 1915." Database with images. FamilySearch. http://FamilySearch.org : 24 July 2020. Citing Assessor. State Historical Society, Pierre.