From the record
“The Carl Friedrick Gartner Homestead, located west of South Dakota Highway 79 near Newell, South Dakota, was settled in 1882 and was proved up in 1892. It was listed on the National Register of Historic Places in 1986.”
Wikipedia article Carl Friedrick Gartner Homestead, CC BY-SA 4.0.
One of 39 National Register listings published here for Butte County · listed in 1986 · category: Building · built in 1882.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service