The Sonde Collection provides a thirty-five year span of documentation for a Montreal-based Canadian experimental musical group who were very active electroacoustic composers and performers in the 70s and 80s. Sonde (formerly named MUD, Musical Design), created and played sound sources in Quebec, Canada and Europe. Sonde’s compositions were generally conceived for live performance on original sound sculptures. Using meditative improvisation, the group produced new music with sounds created by electroacoustic amplification and transformation.
The Sonde Collection is divided into 26 series and contains approximately 1,900 items. The majority of the collection consists of correspondence, concert posters and programs, and audio and video recordings. Activities of the Sonde group are described together as Sonde Papers and the activities of Charles de Mestral, a founding member of the group as Charles de Mestral Papers.
In the Sonde Papers, whenever it has been possible to do so, each item is referenced to the events listing, a numbered, chronological listing of events created by the group, entitled: ACTIVITES DU GROUPE SONDE (1975-2010) / Sonde Activities (1975-2010). The Sonde Papers include posters, programmes, scores, photographs, audio and video recordings.
The Charles de Mestral Papers are the personal items of Charles de Mestral, a member of the Sonde group from its inception. Whenever it has been possible to do so, each item is referenced to the events listing entitled: RÉALISATIONS DANS LE DOMAINE DE L’INSTALLATION SONORE (1985-2013, Charles de Mestral) / Sound Installations (1985-2013, Charles de Mestral) a numbered, chronological list of activities of Charles de Mestral. The Charles de Mestral Papers include scores, correspondence, installation plans, clippings, audio recordings and publications.

Collections consists of theater, music, and dramatic productions, between 1911 and 1915, collected by T. Wesley Mills.

The Taylor White Collection is comprised of 938 watercolour paintings of mammals, birds, fish, and reptiles. White, a British jurist, commissioned various artists of the day (including Charles Collins, Peter Paillou, Jacob Van Huysum, George Edwards, and Eleazar Albin) to paint these animal portraits from live and dead specimens brought back to England from around the world. Many of the paintings are accompanied by loose-leaf manuscript notes, written mainly by White in Latin, providing further information about the animal; transcriptions and English translations of these notes have been provided within the record for each painting.

This collection consists of contemporary copies of letters written by T. Blackwood from Michilimackinac to James and Andrew McGill & Co., to Ch. Chaboillez, and to T. and J. McGregor.

Typed transcriptions of Charles McKenzie’s narratives about the Indigenous people of MIssouri, draft and revised draft before publication; Alexander Henry’s account entitled: “Account of a visit to the Mandan and Hidatsa Indians in 1806”; and John Macdonell’s “The Red River”. Also includes drafts for work entitled, "Early fur trade on the Northern Plains : Canadian traders among the Mandan and Hidatsa Indians, 1738-1818 : the narratives of John Macdonell, David Thompson, Franc̦ois-Antoine Larocque, and Charles McKenzie" / edited and with an introduction by W. Raymond Wood and Thomas D. Thiessen. Norman : University of Oklahoma Press, 1985.

These are letters from Selkirk to Miles MacDonnell, 1811-1813 and instructions concerning wages and contracts. Thirteen documents concern Lord Selkirk's conflict with the North West Company at the Red River Colony and Fort William.There is also a letter to Colonel Benjamin Walker, 1816.

The collection consists of falls into two series: Papers and Diaries. The Papers primarily reflect Brown's political concerns and activities in Montreal between 1832 and 1838. They include excerpts from the Vindicator newspaper, notes, resolutions, memoranda and speeches, as well as letters to Brown concerning Florida politics and the United States' negotiations with Native peoples, 1841-1843. There are also business documents and letters; essays by Brown on the 1837-1838 Lower Canada Rebellion and the annexation of Canada; and a journal kept during an ocean voyage in 1838.

The Diaries consist of seven notebooks written in pencil, or perhaps more properly dictated, by Brown in 1887-1888. They were transcribed by F. J. Nobbs in 1987.

Collection consists of an album of travel photographs (chiefly black and white, with some colour). Captions date the photographs to between 1946-1956 and then to between 1989-1994. The captions also include information about the photographs themselves. The first portion of the album contains photographs taken in Niagara Falls, Manitoulin Island, northern Ontario, Bermuda, the Maritime provinces, and the United States, including Howe Caverns, Fort Williams, New York, Yellowstone National Park, Plymouth Rock, Washington, New Orleans, and Mackinac Island, dated between 1946 and 1956. The second portion contains photographs dated from 1898-1994 and documents travel to Israel, Albania, the former Yugoslavia, Russia, Estonia, England, Greece, Costa Rica, Laos, Vietnam, Cambodia, and Ukraine. The album is cloth bound in blue with the title "Snaps" in black with painted tulips.

The Tundra Books fonds contains a collection of archival records documenting Tundra's publishing history. It includes correspondence with Tundra authors and artists, most notably with William Kurelek. Parts of the archival material document the development and production of each title and May Cutler's dealings with government and funding agencies. The archival materials document a significant chapter in Canadian post-war publishing history.

Mazgelis's, Rubenstein's and Dolan's prize-winning stories are included in this archive.