From the record
“The Sandstone and Cobblestone Schools, a complex of two school buildings in Absarokee, Montana, on Main St. and at 142 S. The complex was listed on the National Register of Historic Places in 1987.”
Wikipedia article Sandstone and Cobblestone Schools, CC BY-SA 4.0.
One of 16 National Register listings published here for Stillwater County · listed in 1987 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

