(Chicago): (Mercury Records), (1949). Six 78 rpm discs. Oblong 4to. Produced, with an introduction and explanatory notes by Granz. Illustrated with two photographic paste-downs and 29 photographs by Gjon Mili. Black cloth, sunned and affected by damp at bottom; stamped in gilt. Drawing in blue pen on first sheet; photographs, record sleeves, and some records affected by damp; discs not played. An important album capturing some of the greatest jazz musicians to ever play.