Attended by tens of thousands of people each August, it's the longest continually running folk festival in America. These pages capture 55 years of its beloved, creatively charged atmosphere. Over 800 photos from 1962 to today feature the more than 825 performers and bands who have taken the stage, including Jackson Browne, Roseanne Cash, Judy Collins, Ani DiFranco, Steve Earle, Arlo Guthrie, Janis Ian, Odetta, the Tuva Throat Singers, and Doc Watson...