This fonds contains personal correspondence and professional and academic materials relating to Simpson's career at the University, including memorabilia relating to student life in the late 1920s and later material relating to the history of the College of Home Economics; as well as material pertaining to the life and activities of Simpson's sister, P.W. Rowles; husband, G.W. Simpson; and her husband's first wife, M. Simpson. The bulk of the material regarding M. Simpson is a collection of prints and printing blocks illustrating the campus of the University of Saskatchewan.

This fonds contains an annual report for the Extension Division for 1918, various reports including "Good Farming Competitions in Saskatchewan," rules for ploughing match competitions, and a programme for the "Fifth Annual Farm Boy's Camp (1919)." In addition, there is information on the Agriculture Institute of Canada and the Institute of Agrologists, as well as 2 files of material on the Boy Scouts. The majority of the fonds consists of addresses on various topics, including "The Historical Development of Extension in Saskatchewan," "A Successful Example of Co-operative Production," "Field Crop Contests," and "History and Philosophy of Agriculture Extension," as well as talks concerning the Boys' and Girls' Clubs, the Homemakers' Clubs, poultry and field crop improvement, the University, leadership, and adult education. The final file in the fonds concerns the Rayner Memorial Fund, established through the Agricultural Societies Association.

This fonds contains reports published by the Centre, as well as minutes, charter, by-laws, and memoranda relating to its operation and mandate.

This fonds contains material relating to all activities undertaken by the Extension Division. These records generally contain correspondence, minutes, reports, and memoranda; as well as publications and bulletins, and information on various provincial and national associations, societies, or clubs.

A collection of charts and diagrams that would have likely been used in a classroom setting. Many of them are hand painted, with some being commercially created. The topics include botany, agriculture, zoology, and general science.