Iron Butterfly / Savoy Brown / BG 247 Poster, original Bill Graham (BG 247) poster for the Fillmore West Midweek Special featuring Iron Butterfly, Savoy Brown, Fairport Convention, Chicken Shack et all - designed by Alton Kelley - measures 21 15/16" by 28 1/8" - light wear in places on the edges, otherwise Excellent condition