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.

Six original Canadian letters from World War Two, with content about the destroyer HMCS Athabaskan, pride in service, the Wrens, criticisms of those young men not serving, and duties while in service. Two of the letters were written by Telegrapher Leonard Woolsey. The other letters were written by Barbara Woolsey. The letters were addressed to Eldon Woolsey, brother of Leonard and son of Barbara, who served overseas with the RCAF.

The fonds contains records that relate to Summers’ involvement in both the military and military history, his work as an administrator and pharmacy professor, his involvement with several committees, and his significant role within a number of professional pharmacy associations, etc.

This fonds contains material relating to the personal and professional life of Luise Herzberg, including materials relating to her childhood and schooling; family documents; materials relating to her parents, Paul and Elsbeth Oettinger, correspondence with her sister, Lotte Thurnauer; and materials received or collected by her son Paul Herzberg. The fonds contains substantial material relating to Luise’s scientific work, including correspondence with international colleagues, and reprints of her articles.

This fonds contains material relating to the personal and professional life of Gerhard Herzberg and his wife, Luise Herzberg. In particular, it contains correspondence with family, friends and colleagues, most notably from the period 1933-1949. Some articles are included.

This fonds consists of material relating to Ridgway's military service, his scholarly research concerning the work of Voltaire and Chamfort particularly, his career with the University of Saskatchewan, and his work on internal university committees, professional associations, external agencies (such as Canadian University Service Overseas and the Saskatoon Symphony Board), as well as materials relating to his classes and lectures.