From the record
“Dwight Summer House, also known as the Bay Pointe Restaurant, was a building constructed as a private summer home, located on Gun Lake at 11456 Marsh Road in Shelbyville, Michigan. It was designated a Michigan State Historic Site in 1982 and listed on the National Register of Historic Places in 1985.”
Wikipedia article Austin H. and Frankie A. Dwight Summer House, CC BY-SA 4.0.
One of 9 National Register listings published here for Barry County · listed in 1985 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service