From the record
“Fort Mackinac is a former British and American military outpost garrisoned from the late 18th century to the late 19th century in the city of Mackinac Island, Michigan, on Mackinac Island. The British built the fort during the American Revolutionary War to control the strategic Straits of Mackinac between Lake Michigan and Lake Huron, and by extension the fur trade on the Great Lakes.”
Wikipedia article Fort Mackinac, CC BY-SA 4.0.
One of 22 National Register listings published here for Mackinac County · listed in 1970 · category: District · built in 1875.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service





