From the record
“The First National Bank in Gary, South Dakota is a building on South Dakota Highway 22 which was built in 1917. It was listed on the National Register of Historic Places in 1977.”
Wikipedia article First National Bank (Gary, South Dakota), CC BY-SA 4.0.
One of 10 National Register listings published here for Deuel County · listed in 1977 · category: Building · built in 1917, Neoclassical architecture.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article