Original 1st printing 13&3/4 x 18&7/8" concert poster for Big Brother & the Holding Company (featuring Janis Joplin), appearing with the Charles Lloyd Quartet, Mount Rushmore and Morning Glory at the Continental Ballroom (Auditorium) in Santa Clara, CA from 8/11-12/1967.
Designer unknown/not credited, image is featured in the Art of Rock book on page 233 (plate 2.342).
Medium flat vellum stock poster is in near mint to excellent (A-/B+ to B+) condition; aside from a couple of small diagonal/vertical bends in the upper left margin/corner, a pair of thin horizontal roll bends running along the lower left/bottom right margins (about 2-3" each) and a couple of tiny rub marks in the upper left corner/quadrant (on "Fri.", on the "m" of "Ballroom" and a few other areas in the yellow field), and a hint of handling wear, it is a BEAUTIFUL example of this very bright and charming little 1967 Janis poster from Santa Clara.