Official promoter-issued 2nd 1st printing 14 x 20" concert poster for Big Brother & the Holding Company (featuring Janis Joplin) appearing with the Charlatans and Blue Cheer at the Avalon Ballroom in San Francisco, CA from 3/31-4/1/1967.

 

 Art by (and SIGNED in black pen by) Victor Moscoso, image is # 55 in the Family Dog/Avalon series. 

 

 Medium flat index index stock poster is in GORGEOUS mint/near mint to near mint (A/A- to A-) condition; an absolutely STUNNING ARTIST-SIGNED example of this early-'67 Moscoso poster from the Avalon. AWESOME all-San Francisco lineup on this one!