http://www.gorp.com/gorp/resource/US_National_Park/main.htm
The GORP (Great Outdoor Recreation Pages) U.S. National Parks and Preserves Resource List is a Web site offering detailed archives of every national park and preserve in the United States. Parks are searched by state; users will find addresses, weather information, and writings on the history of the parks. In addition, users may find detailed information concerning nature trails, seasonal changes, and park accommodations.