Worldwide flight cover collection, 1928-1959. 120 covers in binder, including first flights and Zeppelin, much U.S. with good flights including #C1-3 on 1929 Round the World flight, #C18 flight, 1930-40's Honolulu flights, 1937 Hong Kong & Macao flights, 1930's China flights, Philippines, etc., worth inspection. Estimate  $750 - 1,000. $0