b'80235235C 28 June 1928 (AAMC.P12a) Edie Creek - Wau - Lae cover, flown and signed by pilot Alan Cross for Guinea Airways in a Junkers J-34. Two 4d Huts with typed BY AIR overprints tied by EDIE CREEK cdss and scarce GUINEA AIRWAYS LTD/WAU 2-line cachet. [One of 2 known - flown & signed by Cross; the other example offered at a recent Sydney auction at $2500-$4000]. .$1,5002,000236 237236C 21 Jan.1933 (AAMC.P53) Kainantu (Upper Ramu Goldfields) - Lae - Salamaua cover, flown & signed byJohn Jukes for Guinea Airways. As postal facilities were not available at Kainantu, all mail was cancelledupon arrival at Lae P.O. [Only 12 flown]. Ex Ray Kelly. $8001,000237C 10 April 1933 (AAMC.P59) Wahgi River (Goroka) - Lae - Salamaua flown cover, signed and endorsed by the pilot, Ian Grabowsky for Guinea Airways. Grabowsky carried the first airmails to and from Goroka at the time that the Leahy Brothers Expedition was active in the Wahgi Valley. [Only 5 flown]. Cat.$2000. Ex Ray Kelly. $1,5001,750238 239238C 1 Dec.1936 (AAMC.P109) Sydney - Salamaua cover, flown for W.R. Carpenter & Co, postmarked on arrival 10.12.36, signed by pilot R.O.Mant. [Only 5 flown]. .$500750'