Original 1st printing 11 x 16&1/4" (appx.- bottom margin is trimmed) promotional poster for an all-day/night Jefferson Airplane show, broadcast on WIBA-FM in Madison, WI on 9/22/1972. 

 Art by Ron Cobb (central design from "After Bathing at Baxter's", lettering designer unknown), medium-thin flat index stock poster is in decent/used (B/B-) condition; aside from the aforementioned bottom margin trimming, there is a 2" tear in the lower left margin (between "Friday" and "Radio"), a flattened horizontal center crease and a whisper of handling wear, otherwise fine.

 Oddball little early-'70's Airplane poster from an underground radio show.