Free Passes to National Parks

America the Beautiful

National Parks and Federal Recreational Lands Pass – Access Pass - Free.

http://www.nps.gov/fees_passes.html

http://store.usgs.gov/pass/access.html

From their website:

This is a lifetime pass for U.S. citizens or permanent residents with permanent disabilities. Documentation is required to obtain the pass... The pass provides access to, and use of, Federal recreation sites that charge an Entrance or Standard Amenity. The pass admits the pass holder and passengers in a non-commercial vehicle at per vehicle fee areas and pass holder + 3 adults, not to exceed 4 adults, at per person fee areas (children under 16 are admitted free). The pass can only be obtained in person at the park. The Access Pass provides a 50 percent discount on some Expanded Amenity Fees charged for facilities and services such as camping, swimming, boat launching, and specialized interpretive services. In some cases where Expanded Amenity Fees are charged, only the pass holder will be given the 50 percent price reduction...

State and National Parks Disability Passes (Article)

http://www.bellaonline.org/articles/art56377.asp

This article provides information on obtaining free passes at various state and national parks, as well as useful links.