Reference your telegrams No. 160 dated 21st February  and No.
173 dated 12th April , regarding exchange bi-monthly service liaison letters. Regarding the Air Department, the liaison letters exchanged regularly between the Chief of the Air Staff  in Australia and the Australian Air Liaison Officer, Ottawa , appointed in connection with the Empire Air Training Scheme, together with the reports of meetings of the Supervisory Board air training plan forwarded to Australia provide a satisfactory liaison so far as the Royal Australian Air Force is concerned. Any information relating to the R.A.A.F. desired by the Canadian air authorities could be obtained through the Australian Air Liaison Officer and it is thought that this arrangement would meet Canadian requirements. Navy consider progress not sufficient in a fortnight to justify bi-monthly letters on naval matters but if reports desired Navy suggest once a quarter would suffice. Army also consider quarterly letters would meet requirements. If Canadian Naval and Army authorities wish commence exchange letters in accordance foregoing please advise so that authorities here may be requested reciprocate