From the record
“Kevin station, in Kevin, Montana, was built by the Great Northern Railroad in Kevin, Montana in 1903. It was listed on the National Register of Historic Places in 1980 as the Kevin Depot.”
Wikipedia article Kevin station, CC BY-SA 4.0.
One of 6 National Register listings published here for Toole County · listed in 1980 · category: Building · built in 1903.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service