United States, Air Mail Coveers, 1920's-40's. Eclectic group of over 50 airmail usages, including $1.30 Zepp on South America flight, C18 on N.Y. Oct 4 1933 flight cover, Hindenburg Zeppelin flights, Macon & Shenandoah covers, first flights to foreign destinations including 1929 Fiji, Lindbergh cover with his cameo and " Our Traitor", Bremen ship to shore, 1928 crash cover, Trans-Pacific, "Night Air Mail", etc; detailed evaluation recommended. Estimate  $500 - 750. $0