August 15, 1969: The Woodstock Music &amp; Art Fair opens in Bethel, NY. Photo: a group of friends have a picnic near the festival grounds (The Three Lions)

August 15, 1969: The Woodstock Music & Art Fair opens in Bethel, NY. Photo: a group of friends have a picnic near the festival grounds (The Three Lions)

August 15, 1969: The Woodstock Music & Art Fair opens in Bethel, NY. Photo: