From the record
“The Bay Port Historic Commercial Fishing District is a commercial fishing historic district located on Lakeside Drive and First Street adjacent to Saginaw Bay in Bay Port, Michigan. The district was listed on the National Register of Historic Places in 1977.”
Wikipedia article Bay Port Historic Commercial Fishing District, CC BY-SA 4.0.
One of 27 National Register listings published here for Huron County · listed in 1977 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service