National Parks Quotes
Theodore Roosevelt (2010). “The Green Roosevelt: Theodore Roosevelt in Appreciation of Wilderness, Wildlife, and Wild Places”, p.300, Cambria Press
Wallace Earle Stegner (1995). “Where the bluebird sings to the lemonade springs: living and writing in the West”, Random House Value Pub
Kurt Vonnegut (1998). “Timequake”, p.8, Penguin
"Videoculture". Rushworth M. Kidder, Christian Science Monitor, June 10, 1985.
Robert Smithson, Jack D. Flam (1996). “Robert Smithson, the Collected Writings”, p.155, Univ of California Press