From the record
“Itasca State Park is a state park of Minnesota, United States, and contains the headwaters of the Mississippi River. The park spans 32,690 acres (132.3 km2) of northern Minnesota, and is located about 21 miles (34 km) north of Park Rapids, Minnesota and 25 miles (40 km) from Bagley, Minnesota.”
Wikipedia article Itasca State Park, CC BY-SA 4.0.
One of 2 National Register listings published here for Clearwater County · listed in 1973 · category: District · built in 1891, rustic architecture.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service