From the record
“The Rosebud County Deaconess Hospital, on N. 17th Ave in Forsyth, Montana, was built in 1920-21. It was listed on the National Register of Historic Places in 1979.”
Wikipedia article Rosebud County Deaconess Hospital, CC BY-SA 4.0.
One of 22 National Register listings published here for Rosebud County · listed in 1979 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

