The following books (available at Amazon.com) are good sources of information on Yellowstone and Grand Tetons National Parks.

• Grand Teton Impressions by Fred Pflughoft (Photographer), Henry H. Holdsworth (Photographer)
• Grand Teton Wild and Beautiful by Fred Pflughoft (Photographer), Henry H. Holdsworth (Photographer)
• The Greater Yellowstone Ecosystem: Redefining America`s Wilderness Heritage by Robert B. Keiter
• Hiking Grand Teton National Park, 2nd Edition by Bill Schneider
• The Guide to Yellowstone Waterfalls and Their Discovery by Paul Rubinstein, et al
• The Light of Spring: The Seasons of Yellowstone by Tom Murphy
• Lonely Planet Yellowstone & Grand Teton National Parks by Bradley Mayhew, et al.
• Lost in My Own Backyard: A Walk in Yellowstone National Park by Tim Cahill
• Myth and History in the Creation of Yellowstone National Park by Paul Schullery, Lee H. Whittlesey
• Outdoor Family Guide to Yellowstone and Grand Teton by Lisa Gollin Evans
• Photographer's Guide to Yellowstone and the Tetons by Joseph K. Lange
• Photographing Animals in the Wild: Photographic Hints and Tips by Andy Rouse
• Playing God in Yellowstone: The Destruction of America's First National Park by Alston Chase
• Restoring a Presence: American Indians and Yellowstone National Park by Peter Nabokov, Lawrence Loendorf
• Silence & Solitude: Yellowstone's Winter Wilderness by Tom Murphy
• The Spirit of Yellowstone: The Cultural Evolution of a National Park by Judith L. Meyer
• Top Trails Yellowstone & Grand Teton National Parks: Must-Do Hikes For Everyone by Andrew Dean Nystrom, Morgan Konn (Photographer)
• Watching Yellowstone & Grand Teton Wildlife by Todd Wilkinson, Michael H. Francis (Photographer)
• Windows into the Earth: The Geologic Story of Yellowstone and Grand Teton National Parks by Robert B. Smith, Lee J. Siegel
• The Wolves of Yellowstone by Michael K. Phillips, et al
• Yellowstone & Grand Teton Wildlife Portfolio by Henry H. Holdsworth