• 3 Wisconsin Historical Society Library

• 1 Maps, Atlases

• 1 National parks and reserves
• 1 Parks

• 1 Mississippi River Parkway Commission of Minnesota
• 1 United States. Bureau of Public Roads

• 4 English

• 1 Arizona
• 1 Canyonlands National Park
• 1 Canyonlands National Park (Utah)
• 1 Kentucky
• 1 Mammoth Cave National Park
• 1 Mammoth Cave National Park (Ky.)
• 1 Mississippi
• 1 Sunset Crater Volcano National Monument
• 1 Sunset Crater Volcano National Monument (Ariz.)
• 1 United States
• 1 Utah
• 1 Walnut Canyon National Monument
• 1 Walnut Canyon National Monument (Ariz.)
• 1 Wupatki National Monument
• 1 Wupatki National Monument (Ariz.)

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