U.S.A. Zeppelin, Macon & Classic FDC's. 64 covers, including three C18 usages, with Miami 10/23 printed cachet, Chicago 10/26 on German-American Dr.Eckener #10 size to Friedrichshafen with green receiver on reverse; various Zepp & Akron covers with cachets related to Century of Progress; Piccard's Balloon Ascent; first day covers including 1926 Sesquicentennial forward to about 1938, most with nice cachets; also couple foreign; well worth a closer evaluation by the specialist. Estimate  $300 - 400. $0