The Woodstock Years retrospective featuring iconic pictures taken by photographer reveals archive of evocative images from Woodstock Festival . a black man sits undressed in a canoe while a woman swims naked in the. More than , young people attended the legendary Woodstock festival on August 15, There was so much traffic getting to Woodstock that ambulances couldn't reach this young man who had suffered a head injury #7. Joe Cocker was among the big names performing. AP Photo Nudity was fairly common.