Keystone School (Keystone, South Dakota)
Keystone, United States · built 1890
The Keystone School, on 3rd St. in Keystone, South Dakota, was listed on the National Register of Historic Places in 1981. It is a large rural school built 1897-1900 by Eli Shomaker, with roof of wood shingles. In 2018, it has been the Keystone Historical Museum for a number of years.
School data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).