Official 1967 2nd printing 28 x 21" promotional/head shop poster for local San Francisco FM rock radio station KMPX.
Art by (and SIGNED in gold pen by) Stanley Mouse (with Alton Kelley), image (green background) is featured in the Art of Rock on page 210 (plate 2.259)- this is the second strike of the image (done at roughly the same time as the first) with a brown background.
Medium-thick flat vellum stock is in near mint to excellent (A-/B+ to B+) condition; just a few stray soft handling bends here and there, a tiny pressure crease in the top left corner tip, and a tiny edge ding or two, otherwise fine.
Nifty-looking early-'67 San Francisco FM rock radio artifact with a nice large Mouse signature.