- A pictorial study of Mammoth Cave and Mammoth Cave National Park by W. Ray Scott, 1966
- The little island that could: mitigation banking helped save Florida wetlands.(@Issue): An article from: Parks & Recreation by Ray Pavelka, 2004-03-01
- The House of Thunder, a novel by Dean R. Koontz (originally written as ""by Leigh Nichols""), illustrated by Phil Parks by Dean R. (Dean Ray) (1945-) and Parks, Phil (illus.) Koontz, 1988-01-01
- A Ranger Alone: Experiences of a Young Park Warden by Ray V. Fetterly, 1992
- G.I. Joe Movie: Snake Eyes (G. I. Joe (Graphic Novels)) by Ray Park, Kevin VanHook, et all 2010-04-20
- Portable emission measurements of Yellowstone Park snowcoaches and snowmobiles.(TECHNICAL PAPER)(Technical report): An article from: Journal of the Air & Waste Management Association by Gary A. Bishop, Ryan Stadtmuller, et all 2009-08-01
- GI Joe Movie Snake Eyes #4 by Ray Park, 2010
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- GI Joe Movie Snake Eyes #3 by Ray Park, 2009
- The South Park story, 1891-1971 and the founding of Lamar University, 1923-1941;: A documented 80 year history by Ray Asbury, 1972
- Burnished Bridge by Ray Melnik, 2010-03-10
- Canyon Light: The Seasons of Letchworth State Park; Photographs by Ray Minnick, 2007-01
- The Ray House, Wilsons Creek Battlefield National Park by Edwin C Bearss, 1968
- Report on historical structures at Yellowstone National Park by Ray H Mattison, 1960
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