Writing a book about the aircrew from Nos 9, 37 and 149 Sqns who flew in the Heligoland Bight raid on 18 December 1939. Project website www.heligoland39.org for background. Unable to trace information on some aircrew including from 149 Sqn the following: Sgt McLeod, co pilot on Wellington 2984 (Pilot Flt Lt Duguid), Sgt RE Osborne, Observer in Wellington N2894 (Pilot Flt Sgt Kelly) and AC2 Williams, Front Gunner in Wellington N2866 (Pilot Fg Off Riddlesworth). Grateful for any information/details on the above and/or any others known to have flown on the mission as detailed on the project website. Thanks, Doug.