1969 file photo: A portion of the 400,000 concert goers who attended the Woodstock Music and Arts Festival held on a 600-acre pasture near Bethel, NY. (AP Photo)
1969 file photo: Rock music fans sit on a tree sculpture as one leaps mid-air onto a pile of hay during the Woodstock Music and Art Festival held in Bethel, NY. (AP Photo)
1969 file photo: A woman naps on the way to Woodstock Music and Art Festival in Bethel, NY. An estimated 400,000 people showed up for the fest on a 600-acre parcel of farmland. (AP Photo)
1969 file photo: Music fans hike from the Woodstock Music and Art Festival, in Bethel, NY. Some 300,000 fans began to leave as the festival ended in the rain. (AP Photo)
1969 file photo: Music fans seek shelter in a grass hut at the Woodstock Music and Art Festival in Bethel, NY. (AP Photo)
1969 file photo: Grass and leaf huts are used as makeshift living quarters for some of the attendees at the Woodstock Music and Arts Festival at White Lake in Bethel, NY. (AP Photo)
1969 file photo: A crowd of about 400,000 people attend the Woodstock Festival in Bethel, NY. Woodstock was staged 80 miles northwest of New York City on a hillside owned by Max Yasgur. (AP Photo)
1969 file photo: A portion of the 400,000 concert goers who attended the Woodstock Music and Arts Festival held on a 600-acre pasture near Bethel, NY. (AP Photo)
1969 file photo: People abandoned their trucks, cars and buses, backed up for 10 miles, as some 200,000 festival goers tried to reach the Woodstock Festival in Bethel, NY. (AP Photo)
1969 file photo: Self-portrait of Mark Goff, who covered Woodstock in 1969. Dozens of Goff's Woodstock shots are on display 50 years later. (Mark Goff Photography, Leah Demarco / Allison Goff via AP)
1969 file photo: Self-portrait of Mark Goff, who covered Woodstock in 1969. Dozens of Goff's Woodstock shots are on display 50 years later. (Mark Goff Photography, Leah Demarco / Allison Goff via AP)
1969 file photo: Richie Havens at Woodstock in Bethel, NY. The photo is one of hundreds by Mark Goff now on display, 50 years later. (Mark Goff Photography, Leah Demarco / Allison Goff via AP)
1969 file photo: Music fans on a break at Woodstock in Bethel, NY. The music festival will be celebrated on its 50th anniversary, but not as a hippie trample-the-fences kind of concert. (AP Photo)
1969 file photo: Music fans at Woodstock in Bethel, NY. The pivotal festival of 'peace and music' was an inspiring moment of countercultural community and youthful freethinking. (AP Photo)
1969 file photo: Janis Joplin at Woodstock in Bethel, NY. The photo is one of hundreds by Mark Goff now on display, 50 years later. (Mark Goff Photography, Leah Demarco / Allison Goff via AP)
1969 file photo: Jerry Garcia at Woodstock in Bethel, NY. The photo is one of hundreds by Mark Goff now on display, 50 years later. (Mark Goff Photography, Leah Demarco / Allison Goff via AP)
A plaque marks the site of the 1969 Woodstock Music and Arts Fair, in Bethel, NY. The site is hosting a weekend of gigs by Carlos Santana and John Fogerty, among others. (AP Photo/Seth Wenig)
Charles Vestrand, Drums, Pa., displays his framed Life special edition Woodstock magazine along with his tickets from the 1969 music festival. (Warren Ruda / Hazleton Standard-Speaker via AP)
Charles Vestrand's original 1969 Woodstock tickets on display in Drums, Pa. The Woodstock music festival marks its 50th anniversary this month. (Warren Ruda / Hazleton Standard-Speaker via AP)
2019 photo: The number 50 and a peace sign mowed into the grass at the site of the 1969 Woodstock Music and Arts Fair in Bethel, NY. (AP Photo/Seth Wenig)
Caleb Hairston, 4, leaves flowers he picked on what used to be the stage of the 1969 Woodstock Music and Arts Fair, in Bethel, NY. (AP Photo/Seth Wenig)
A small peace sign is set into the grass at the site of the 1969 Woodstock Music and Arts Fair, in Bethel, NY. (AP Photo/Seth Wenig)
Carol Laura and George Acquaire walk barefoot to a peace sign mowed in the grass at the site of the 1969 Woodstock Music and Arts Fair, in Bethel, NY. (AP Photo/Seth Wenig)
Carol Laura looks over the site of the 1969 Woodstock Music and Arts Fair, in Bethel, NY. (AP Photo/Seth Wenig)
2019 photo: A tourist looks at messages at the site of the 1969 Woodstock Fest. Fifty years later, memories of the anarchic weekend of Aug 15-18, 1969, remains sharp among fans. (AP Photo/Seth Wenig)
2019 aerial photo shows the field on Max Yasgur's farm where 400,000 people flocked for the 1969 Woodstock Festival in Bethel, NY. (AP Photo/Seth Wenig)
2019 photo: A flat piece of ground and rock cairns are all that remain of the stage of the 1969 Woodstock Music and Arts Fair in Bethel, NY. (AP Photo/Seth Wenig)
2019 photo: A flat piece of ground and rock cairns are all that remain of the stage of the 1969 Woodstock Music and Arts Fair in Bethel, NY. (AP Photo/Seth Wenig)
