23x33” kiosk poster for July 21-22, 1974 “Summer Rock Festival” that took place at the Radstadion in Frankfurt, Germany. Put together by Germany’s Mama Concerts, festival featured a varied line-up including Sly and The Family Stone, the Faces, Rory Gallagher, Canned Heat, Black Sabbath, Jon Hiseman’s Tempest, The Spencer Davis Group, Gentle Giant, Curved Air, Marsha Hunt, Back Door, Heavy Metal Kids and Blue. Poster was folded as issued and shows wear with creasing at margins and pinholes at corners. .25x.75” corner piece missing off upper right corner and 1” tear just above center at left margin. VG/Fine.