Drawing (item) - Sloane biplane 1911 Fortescue gyroplane Austin automatic balancing airship Salmason AD9 engine Austaircar DCA 1A 1C light bomber Fleep Curtiss C46D Gloster meteor DCA 2 Kingsford Smith PL7 tanker Air tug Victa aircruiser 210 Seagull replacement, Miscellaneous Aircraft Drawings