Original 1st printing 18 x 23" concert poster for "Twenty Years After", a two-day event held at the Olympic Velodrome on the campus of California State University at Dominguez Hills from 8/19-20/1989. Acts listed include: Wavy Gravy (MC), Humble Pie, Electric Flag, Mark Farner (Grand Funk Railroad), Chambers Brothers, Leon Russell, Edgar Winter, Spencer Davis Group, Ted Nugent, Tim Bogert, Ginger Baker, Randy California, Derek St. Holmes, Robbie Krieger, Merl Saunders, It's A Beautiful Day, Band of Gypsies with Buddy Miles, Country Joe McDonald, Blood, Sweayt & Tears, Jack Hammer's Tribute to Jimi Hendrix, Big Brother & the Holding Company, John Sebastian, Canned Heat, Sha-Na-Na, Richie Havens and Melanie.

 Art by (and SIGNED in black flair pen by) Frank Kozik, medium-thick semi-gloss-coated index stock poster is in near mint (A-) condition; just a couple of tiny edge dings here and there and a whisper of surface wear, otherwise it is a SPECTACULAR-looking example of this extra-vibrant late-'80's Southern California event poster.