Original 1st printing 27&7/8 x 19&7/8" concert poster for Big Brother & the Holding Company (featuring Janis Joplin) appearing with Blue Cheer and Eighth Penny Matter at the Family Dog at 1601 West Evans in Denver, CO on 9/8-9/1967. (*1st Family Dog held shows at the venue).
Art by (and SIGNED in black fountain pen by) Rick Griffin, image is # 79/D-1 in the Family Dog/Denver series. This is the large format (OP-2 in the Eric King Guide) version.
Medium flat index stock poster is in excellent (B+) condition; there is a VERY thin/soft vertical stress bend in the upper left/center margin (above the "m" of "Family", a couple of tiny corner tip creases (and a tiny nip tear) in the lower right corner, a tiny pin-prick surface spot or two hiding within the image area and a thin vertical crease/bend in the right margin, otherwise fine.
An absolutely FANTASTIC-looking ARTIST-SIGNED example of this extra-large Rick Griffin classic from the grand opening of the Denver Dog. KILLER Griffin signature on this one.