Original 1st printing 14&1/4 x 21&3/4" concert/event poster for the 1st Northern California Folk-Rock Festival, held at the Santa Clara County Fairgrounds in San Jose, CA on 5/18-19/1968.
Poster lists performances by Jefferson Airplane, the Doors, Country Joe & the Fish, the Animals, Taj Mahal, Ravi Shankar, Electric Flag, Big Brother & the Holding Company (with Janis Joplin), the Youngbloods and Kaleidoscope. Also appeared (not listed): the Grateful Dead, Crome Syrcus, Trans-Atlantic Railroad and more.
Design by Carson Morris Studios, the image is featured in the Art of Rock book on page 232 (plate 2.341).
Medium-thin flat index stock poster is in absolutely fantastic near mint (A-) condition; just a few stray pinch dings here and there, but otherwise it is a very bright/crisp example of this classic 1968 festival poster.
Here's a fascinating super 8 film clip of the Doors in action at the Festival;