From the record
“Point Iroquois Light is a lighthouse on a Chippewa County bluff in the U.S. state of Michigan. Point Iroquois and its light mark the division line between Whitefish Bay and the western end of the St.”
Wikipedia article Point Iroquois Light, CC BY-SA 4.0.
One of 26 National Register listings published here for Chippewa County · listed in 1975 · category: Building · built in 1856.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service