Photograph album with 61 photographs of RAF service in Haifa, Palestine, and Baghdad, Iraq, 1917-1918 and 1928. Three notebooks containing extracts from Pirie's diaries, 1923-1945, 1946-1966 and 1967-1976. Eight letters of thanks, relating to Pirie's success as Allied Air Commander-in-Chief, South East Asia, and Inspector General, RAF, 1947-1949, including letter from V Adm Rt Hon Louis Francis Albert Victor Nicholas Mountbatten, 1st Earl Mountbatten of Burma, Jul 1947. Scrapbook of press cuttings relating to a visit to Canada by RAF Detachment, 1934. Edition of Oculi Exercitus. No 6 Squadron by Flying Officer C D Stewart RAF (Zavallis Press, Nicosia, Cyprus, 1963), published to commemorate 6 Sqn's Fiftieth Anniversary, 31 Jan 1964. Seventeen photographs, 1917, 1946-1947, including group of officers, 34 Sqn, Royal Flying Corps, Western Front, 1917, and Pirie's departure parade as Allied Air Commander-in-Chief, South East Asia, 1947. Personal correspondence, 1964-1978, including letter and typescript article by Eric W Cockcroft entitled 'My experience as a World War One RFC/RAF pilot', Nov 1978.