The 1st printing of the poster shows "Printed by West Coast Lithograph Co., SF" in the bottom right hand margin. The background green color varies significantly throughout the run, ranging from medium to dark olive. It was printed before the concert and measures 13 9/16" x 20 15/16".
The 2nd printing was produced after the concert, and deletes the West Coast Lithograph credit. This reprint is substantially lighter in color than the original printing, and it measures 13 1/2" x 20 9/16".