Published: October 2006
Learn More
In Learn More the National Geographic magazine team shares some its best sources and other information to expand your knowledge of our featured subjects. Special thanks to the Research Division.

Related Links

Coalition of National Park Service Retirees
A group representing more than 500 former employees of the National Park Service has developed this website as a way to voice concerns about actions being undertaken that could diminish the values and purposes for which the national park system was established.

U.S. National Park Service
Log on to this searchable site to find detailed information on any of the nearly 400 areas administered by the National Park Service.

Natural Resources in the Parks
Want to learn what the Park Service is doing to protect our wildlife, manage invasive species, or preserve water resources? This site has a wealth of information on those subjects and more, as well as material developed specifically for the classroom.

National Parks Conservation Association
For more than 80 years this group has worked to "protect and enhance America's National Park System for present and future generations." Log on to learn how you can help.


Everhart, William C. The National Park Service. Westview Press, 1983.

Harmon, David, Francis P. McManamon, and Dwight T. Pitcaithley. The Antiquities Act. University of Arizona Press, 2006.

Hartzog, George B. Battling for the National Parks. Moyer Bell Limited, 1988.

National Parks Conservation Association. Faded Glory: Top 10 Reasons to Reinvest in America's National Park Heritage. NPCA, March 3, 2005.

Ridenour, James M. The National Parks Compromised. ICS Books, Inc., 1994.

U.S. Department of Interior. Draft: Management Policies. June 16, 2006.

NGS Resources

Thompson, John M. Our National Parks: Tours With Rangers. National Geographic Books, 2006.

Goodheart, Adam."Seasons of Smoke: Great Smoky Mountains." National Geographic (August 2006), 90-107.

Howells, Robert Earle. "The Insider's Guide to the Great Parks." National Geographic Adventure (June/July 2006), 70-80, 82, 84.

Morell, Virginia. "The Unexpected Canyon." National Geographic (January 2006), 36-55.

Tourtellot, Jonathan. "Destinations Scorecard: National Parks." National Geographic Traveler (July/August 2005), 80-92.

Heat-Moon, William Least. "Yosemite National Park: Beyond the Valley of Wonders." National Geographic (January 2005), 98-117.

Fuller, Alexandra. "Yellowstone & Grand Teton National Parks. National Geographic (November 2003)

Mitchell, John G. "Alaska's Giant of Ice and Stone: Wrangell-St. Elias National Park." National Geographic (March 2003), 56-83.

Heacox, Kim. An American Idea: The Making of the National Parks. National Geographic Books, 2001.

Mitchell, John G. "The Big Open: Going Public with the Public Lands." National Geographic (August 2001), 2-29.

"National Geographic Selects U.S. and Canada Travel Destinations." National Geographic, 2000.