cover Air Post & Specialized Aerophilately Covers, 1912-40, approximately 70 covers or cards, several better items incl. many early balloon flights: two German 1912-19 printed flight cards, one Austrian 1915 Siege of Przemysi flight card, four Canadian R-100 dirigible flight cards or covers, couple autographs and some related collateral, also several covers related to the 1930 Gordon Bennett International Balloon Race and two U.S. 'Los Angeles' dirigible flight covers; balance mostly FAM covers ( first flights of added international service - virtually all related to FAM 18 or 19), worthy of very careful examination, fine-very fine lot