The poster was only printed once before the concert. It measures 13 7/8" x 21 1/4".

The 2nd printing is on uncoated matte stock and has "W 2021" in the lower right hand margin. It was printed in 2021 by Wolfgang's in a 100 copy run. This reprint measures 13" x 20".

Irons moved to San Francisco in 1967 and roamed around Haight-Ashbury with his sketchbook, creating images he would later use in his posters. As usual, promoter Bill Graham needed a poster in a hurry, and Irons succeeded in producing one overnight. As his talent as a draftsman developed, a distinctive line quality and refined sense of balance set Irons' posters apart. His cartoonist inclinations are often evident, and he became one of the seminal figures in underground comics. Irons also found work producing album graphics and book illustration, but it was the art of tattooing that became his passion.