From the record
“The Big Traverse Bay Historic District is a historic district located east of Lake Linden, Michigan at the mouth of the Traverse River. It was listed on the National Register of Historic Places in and designated a Michigan State Historic Site in 1975.”
Wikipedia article Big Traverse Bay Historic District, CC BY-SA 4.0.
One of 41 National Register listings published here for Houghton County · listed in 1975 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service