From the record
“The Forsyth Main Street Historic District is a 4 acres (1.6 ha) historic district in Forsyth, Montana which was listed on the National Register of Historic Places in 1990.”
Wikipedia article Forsyth Main Street Historic District, CC BY-SA 4.0.
One of 22 National Register listings published here for Rosebud County · listed in 1990 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service
