• 2 Wisconsin Historical Society Library

• 3 Journals, Magazines, Newspapers
• 1 Maps, Atlases

• 3 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 Sunset Crater Volcano National Monument
• 1 Sunset Crater Volcano National Monument (Ariz.)
• 1 Utah
• 1 Walnut Canyon National Monument
• 1 Walnut Canyon National Monument (Ariz.)
• 1 Wupatki National Monument
• 1 Wupatki National Monument (Ariz.)

Limit year range