United States Airship and Zeppelin flown covers, 1925-36 including 1925 by airship ‘Los Angeles' to Bermuda (2), 1928 F.F. USA to Germany, 1931 Ship-to-Shore via Airship ‘Volunteer', and 1929 Lakehurst to Lakehurst round world trips (3, one with letter enclosd). Also 1934-35 Naval commemorative covers concerning the airship ‘Macon'.Fair to VF (13)