This book reveals the historic importance of the Great Allegheny Passage Trail, now a scenic biking tand hiking trail that stretches from Pittsburgh, PA to Washington, D.C. Through beautiful contemporary photos, historic illustrations and a compelling narrative, the rich history of the trail comes to life for visitors (and everyone) to enjoy. Formerly titled An Uncommon Passage: Traveling through History on the Great Allegheny Passage Trail, this is a revised and updated version.