Vintage 1969 Atlanta International Pop Festival Poster (Matted & Framed) Signed by L. Bragg! This vintage Atlanta International Pop Festival poster in excellent condition. Poster colors are vibrant. Musicians on the poster include: Led Zeppelin, Johnny Rivers, Janis Joplin, Booker T and the MG's, Sweetwater, Credence Clearwater Revival and more. The only other one I have seen has the standard L. Bragg stamped signature, but this one also has the authentic signature as you can see from the photos. This vintage poster promotes The Atlanta International Pop Festival of 1969. Johnny Winter performed at this festival along with everyone from Led Zepplin to Janis Joplin. Illustrated by L. Bragg (and Signed). These poster was appraised between $1,500-$1,800. There are two official posters connected with this festival, and the "bubble " poster presented seems to be much more rare than the "peace sign" poster available elsewhere.