(AVIATION.) Dornier / DoX. Group of 6 postcards and 2 small photographs of the Dornier DoX. 4 postcards in continental size, the remaining in standard size (one postmarked in Switzerland in 1930). Small photos probably removed from sets of 10 or 12 issued in small wrap-around packets, both with mounting residue on versos. with--Dornier and Tilgenkamp. DoX: Das Grösste Flugschiff der Welt. Profusion of illustrations. 8vo, original wrappers, small nick along bottom edge of front cover. Zürich and Leipzig, 1931. Together, 9 pieces. Vd