• 4 Journals, Magazines, Newspapers

• 4 National parks and reserves
• 2 Outdoor recreation
• 1 Canyons

• 6 United States. National Park Service
• 2 Katmai National Park and Preserve (Agency : U.S.)

• 8 English

• 2 Alaska
• 2 Capitol Reef National Park (Utah)
• 2 Colorado
• 2 Katmai National Park and Preserve (Alaska)
• 2 Rocky Mountain National Park (Colo.)
• 2 Utah
• 1 Black Canyon of the Gunnison National Park
• 1 Black Canyon of the Gunnison National Park (Colo.)
• 1 Grand Canyon National Park (Ariz.)
• 1 Rocky Mountain National Park

• 8 Maps
• 3 topographic maps
• 3 tourist maps

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