Hearing on H.R. 588, to amend the National Trails System Act to create a new category of long-distance trails to be known as National Discovery Trails, to authorize the American Discovery Trail as the first trail in that category, and for other purposes; and H.R. 1513 ... the Lincoln National Historic Trail ... : hearing before the Subcommittee on National Parks and Public Lands of the Committee on Resources, House of Representatives, One Hundred Fifth Congress, first session ... June 10, 1997--Washington, DC.