From the record
“The Central Mine Historic District is a historic district located off US 41 in Upper Michigan. The mine itself was designated a Michigan State Historic Site in 1958, while the surrounding district was designated a Michigan State Historic Site in 1973 and listed on the National Register of Historic Places in 1974.”
Wikipedia article Central Mine Historic District, CC BY-SA 4.0.
One of 31 National Register listings published here for Keweenaw County · listed in 1974 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service





