From the record
“Mary's Church, School and Convent is a historic Roman Catholic church complex off United States Route 212 in Zell, South Dakota.”
Wikipedia article St. Mary's Church, School and Convent, CC BY-SA 4.0.
One of 6 National Register listings published here for Hand County · listed in 1982 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article