cover Zeppelin flight covers, 1930-32, thirteen cacheted Zeppelin flight covers comprising one Rio to US (Sieger no. 59H, DM500), one Rio to Spain (Sieger no. 59C, DM250), and eleven flown on the U.S.S. Akron (nine May 6, 1932 incl. one on 'silver' foil coated paper stock, one Aug 1, 1932 and one Sep 23, 1931 first flight cover with Chamber of commerce backstamp), also incl, two catapult covers: one is 1928 'Ile de France' Aug 13 to NY (AAMC no. 1) which is addressed to Roessler, other is 1929 'S.S. Bremen' franked with U.S. postage (AAMC no. 2), generally very fine lot