This collection contains considerable material relating to aviation history, particularly in western and northern Canada, including material on: the Keng Wah Aviation School for Nationalist Chinese pilots; the RCAF; illustrations of the technology of flight; reference material; and microfilms of the Hudson Strait Expedition fonds (1927-1928) and "The Bulletin" (Western Canada Airways, 1929-1937). Additionally, there is material on Tweddell's other research interests, notably aerial mapping and surveying.
14 men are seen holding various instruments, some are stand as others are seated behind five podiums decorated with music notes and symbols of the R.C.A.F. Alex Essar is on the left of the piano.
Group photograph of the Royal Canadian Air Force (R.C.A.F.) Officers Staff of the No.2 Initial Training School (I.T.S.) stationed in Regina, Saskatchewan.
Members of the Royal Canadian Air Cadets Biggar Squandron posing for a group photo in front of a Royal Canadian Air Force Plane. There is a sign in front of them which reads "No 300 SQDN. R.C.A.C. Summer Camp C.F.B. Penhold 1967"
