Original 1st printing 14 x 20" concert poster for the 6/28-7/2/1967 Grand Opening of the Western Front, featuring the Siegal-Schwall Blues Band, the Charlatans, Congress of Wonders and Bill Ham's Light Sound Dimension, plus (Sat. only) Big Brother & the Holding Company (featuring Janis Joplin) and Quicksilver Messenger Service.
 
 Art by Greg Irons, image is featured in the Art of Rock on page 192 (plate 2.203).
 
 Medium-thick flat vellum stock poster is in very good to excellent (B/B+ to B+) condition; aside from a series of hairline-thin bends and light handling creases scattered around the outer margin area, a couple of tiny pin-prick indentations (upper left margin, next to the "D" of "Dimension"), a few light scuffs/pin-prick stains on the reverse, it is a VERY nice-looking example of this semi-uncommon mid-'67 San Francisco venue poster with a delightful Greg Irons design.