Original 1st printing 14 x 21&1/8" concert poster for Big Brother & the Holding Company (featuring Janis Joplin) appearing with Richie Havens and the Illinois Speed Press from 7/16-18/1968 and Sly & the Family Stone appearing with the Jeff Beck Group (featuring Rod Stewart and Ron Wood) and Siegal-Schwall from 7/19-21/1968, all shows held at the Fillmore West ("Fillmore at Carousel") in San Francisco, CA.

 Art by Lee Conklin, image is # 129 in the Bill Graham/Fillmore series.

 Medium flat index stock poster is in excellent to near mint (A-/B+ to B+) condition; aside from a VERY hard-to-see thin 2" diagonal bend in the lower right corner and the slightest whisper of handling/surface wear (a couple of VERY well-hidden dings), it stands as a mostly clean example. 

 WEIRD-looking 1st printing Fillmore poster from 1968 with a very involved Lee Conklin design and a really eclectic lineup.