14-1/8x22" thin cardboard window card for July 16, 1961 concert that took place at the Auditorium in Klamath Falls, OR featuring Challenge Records recording stars The Champs (their hit "Tequila" is listed along w/other titles including "Subway, Rockin' Mary, Lollipop, Red Eye, Train To No Where" and "Too Much Tequila") as well as Dave Burgess, whose photo appears at bottom center. Printed by Tilghman Press using the split fountain method, w/text/photo colors shifting from red to black from top to bottom. 1-1/8x5" area of faint moisture staining along lower right margin. Aside from that, window card exhibits just lt. corner tip wear and dust soiling. Fine overall. Very rare.