Trails and Greenways Clearinghouse
"The Clearinghouse provides technical assistance, information resources and referrals to trail and greenway advocates and developers across the nation. Services are free and available to individuals, government agencies, communities, grassroots organizations and anyone else who is seeking to create or manage trails and greenways.
The Clearinghouse is a project of Rails-to-Trails Conservancy, with support from the National Park Services Rivers, Trails and Conservation Assistance Program and countless greenway advocates and trail builders who have provided much of the information and expertise reflected on this site." [From website October 2004]
Open Space, Recreation
Trails, Leaf characteristics