b'85254254C 5 Nov.- 1 Dec.1935 (AAMC.P94) Port Moresby - Oroville Police Camp - Daru cover, flown and signed by Stuart Campbell in a Short Scoin Seaplane; also signed and dated on reverse by Cecil Cowley, the O.I.C. DARU arrival cds on front. [Only 12 flown]. Cat.$700. .$400500255255C 17 Mar.1936 (AAMC.P97) cover flown Port Moresby - Daru on Second Archbold Expedition per flying boat Kono, signed by pilot R. Archbold, Daru arrival 18.3.36 backstamp. [12 flown].The objectives of the expedition were to explore the Fly River and to collect specimens. .$500750256256C 31 Oct.1937 (AAMC.P121) Lake Kutubu - Port Moresby, cover flown for Guinea Airways and signed by pilot, A.A Koch, endorsed by officer-in-charge Ivan Champion. [17 flown].This flight was intended to depart on October 11 (see P117) but was delayed by engine trouble until the 31st; the few covers carried being postmarked on arrival.$500750'