- National Parks of America, Centinnial Edition by Stewart & The Editors Of Country Beautiful Udall, 1966-01-01
- AMERICA'S HISTORYLANDS Landmarks of Liberty & AMERICA'S WONDERLANDS the National Parks by National Geographic Society, 1967
- Geyserland: Yellowstone National Park by W.H.) Union Pacific System Murray, 1926-01-01
- Post Card...Bridal Altar in the Mammoth Cave of Kentucky. (Mammoth Cave National Park, Kentucky) by Genuine Curteich Chicago C.T. Art Colortone. Mammoth Cave National Park.., 1940-01-01
- The Gift of Wilderness: A novel (Your Fair Land Series) by Jack Steffan, 1960
- Nature's Wonderland, National Parks of the World by National Geographic, 1989-01-01
- Trees & Forests of Jasper National Park by Jasper National Park, 1986-01-01
- CHALLENGE OF THE BIG TREES. A RESOURCE HISTORY OF SEQUOIA AND KINGS CANYON NATIONAL PARKS. by L. & W. Tweed Dilsaver, 1990
- BIOLOGICAL INVESTIGATIONS IN THE GUADALUPE MOUNTAIN NATIONAL PARK, TEXAS. PROCEEDINGS OF A SYMPOSIUM HELD AT TEXAS TECH UNIVERSITY, LUBBOCK, TEXAS. APRIL 4-5, 1975. by H. & R. Baker Genoways, 1979
- Natures Heritage: Canada's National Parks by David Baird, 1967-01-01
- Post Card...Echo River Flowing Out of Mammoth Cave. Mammoth Cave National Park, Kentucky by National Park Concessions. Mammoth Cave National Park.. Caulfield & Shook, 1940-01-01
- Rocky Mountains National Park (Separate From National Parks Portfolio by Franklin K. Secretary Department Of The Interior Lane, 1931-01-01
- A Pictorial Study of Mammoth Cave and Mammoth Cave National Park by W. Ray Scott, 1951
- Guide Book to Carlsbad Caverns National Park Guidebook by Paul F. Spangle, 1960-01-01
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