1925 (19 Feb) Anglo-Indian Survey Flight by Alan Cobham, cover flown from Calcutta to Karachi, franked with 1a George V and a red flight vignette, tied by Drigh Road cds, with Triangular Flight cachet and flight endorsement at upper left, Karachi arrival pmk on back, where it was signed by the Flight Engineer Arthur B. Elliott (who was killed a year later, when on a flight between Baghdad and Basra), hinge remnants, v.f., 68 covers flown