United States. Dept. of the Interior & Michigan. Geological Survey. (1873). Atlas accompanying reports on Upper Peninsula, 1869-1873. Julius Bien.
Lua i Stíl Chicago (17ú heag.)United States. Dept. of the Interior agus Michigan. Geological Survey. Atlas Accompanying Reports on Upper Peninsula, 1869-1873. New York: Julius Bien, 1873.
Lua MLA (8ú heag.)United States. Dept. of the Interior agus Michigan. Geological Survey. Atlas Accompanying Reports on Upper Peninsula, 1869-1873. Julius Bien, 1873.
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