The fonds consists of correspondence of both a polical and business nature, subject files, mining reports and records of the Association of Professional Engineers of Ontario, press clippings, photographs and a large collection of maps. There is also extensive material regarding an arbitration case between Cementation Company (Canada) Limited and International Minerals and Chemical Corporation (Canada) Limited which includes correspondence, transcripts and evidence.

Fonds consists of ledgers, journals, lumber records, letter books, correspondence, contracts and agreements and miscellaneous material relating to the timber-making, rafting, forwarding, shipbuilding, towing and salvaging of the Calvin Company. There is also a collection of photographs relating to both family and business.

Collections consists of Memorial Books relating to both Lorne and Edith Pierce; travel diaries; photographs; and a copy of Edith Chown Pierce's, "Canadian Glass: A Footnote to History". Nearly every Canadian literary figure of note for the period 1920 to 1960 is representedby at least some manuscript material in this collection. Among its many highlights the collection includes the letters and manuscripts of William Wilfred Campbell; Desertion in Canada by Major John Richardson; the original manuscript of William Kirby's novel, The Golden dog; manuscripts written and decorated by Wilson Macdonald; letters, manuscripts and memorabilia of Sir Charles G. D. Roberts; and the Marjorie Pickthall papers which include her diaries, letters manuscripts and sketches. Also represented are Raymond Knister, Duncan Campbell Scott, Archibald Lampman, Camille Roy, Stephen Leacock, Marius Barbeau,Audrey Alexandra Brown, Earle Birney, Katherine Hale, A. J. Pratt and Al Purdy. Some papers of artists J.E. H. Macdonald, A. Y. Jackson, C.W. Jefferys and Thoreau Macdonald are included in this collection.

The fonds consists of correspondence, manuscripts, typescripts, galley proofs, author files, financial and other business records. Author files deal with all aspects inherent within the publication of that author's manuscript. The reseacher is able to trace the development and the forces that come to bear upon the publication, from the initial submission of a manuscript to the ultimate printing and sale of that manuscript. Manuscripts, typescripts, galley proofs and press proofs of most published manuscripts are included in the fonds.

Fonds consists of "The Clark Papers: Letters from former students and well wishers of Professor Reg Clark upon his retirement from Queen's University, 1954-1992"; being letters of appreciation from former students, bound and presented to Dr. Reginald H. Clark upon his retirement from the Department of Chemical Engineering. In addition there are his lecture and course notes of the "Nature, Science and Man" interdisciplinary environmental studies course he designed in the 1970s.

Fonds consists of correspondence, journals, speeches, lecture and research notes, publications; subject file relating to the Defence Research Board and Privy Council of Canada; reports, material relating to the Radioactive Waste Disposal Research Project; background material, submissions, reports relating to various Royal Commissions including the Royal Commission on Matters of Health and Safety Rising from the Use of Asbestos in Ontario, and the Ontario Commission on Truck Safety.

Fonds predominantly consists of records created and maintained by the Fund in pursuit of their goal to grant funds for projects which carry out the aims of the organization. Also contains governance records such as minutes, annual reports, and policies relating to the Endowment Council.

The collection is comprised of correspondence, articles, telegrams and official military documentation collected and received by Martha and George Lockyer from their son, Chris Railton Lockyer who died on active service (17 August 1917) in the Battle for Hill 70, near Vimy. The collection also includes a number of letters from Alec Lockyer to his parents and siblings. This material was organized by Don Lockyer into two named volumes "Far from Home" and "Somewhere in Europe". The volumes intersperse non-contemporaneous articles and materials framing and contextualizing this material within a larger narrative. Also included are some supplemental letters, photographs and a memorial marker for C.R. Lockyer.

The fonds consists of two handwritten minute books for the Executive meetings of the Society taking a standard form with attendance noted, finances discussed and the work of the members reported.