The Montreal Mendelssohn Choir Collection comprises several volumes of sheet music from the Choir’s library. The choral folios were compiled and bound into eight volumes at the time of their donation to McGill University in 1895. The estate of D. Torrance Fraser, a former Choir member, donated another four volumes of choral music in 1926 and 1927. Three volumes contain second copies of the pieces from the Choir’s library donated thirty years prior; the fourth volume donated in 1927 contains a number of pieces performed by the Choir but not found in the seven extant volumes from the Choir’s library.

Paul Helmer’s "Growing with Canada" Collection constitutes an important resource for research in Canadian music and culture of the twentieth century. Canadian music and culture of the twentieth century. The Collection has been divided into seven series and contains approximately 1 140 items. Of particular interest are the edited interview transcripts (S.1 and S.7, available in print and .pdf, respectively), which Dr. Helmer had intended Paul Helmer Finding Aid Page 3 of 18 17 July 2014 as the second volume of his project. The Collection also contains the raw material for these edited transcripts: namely, the unedited transcripts and audio recordings themselves, as well as biographical information for each “émigré” musician discussed (with correspondence, copies of source material and photographs), copies of primary and secondary sources on immigration and internment, and miscellaneous items, including correspondence, unused research materials and notes relating to the book launch for "Growing with Canada".

The collection consists primarily of recordings on audio cassette of beginner-level language lessons in Ojibwa, Cree, and Inuktitut; authored variously by Basil Johnston, S.T. Mallon et al., C. Douglas Ellis et al., and Louis-Philippe Vaillancourt. The majority of the included material dates from the 1970s. The accompanying language learning texts for the Ojibwa and Inuktitut audiocassettes are included in the collection, along with duplicate recordings of 35 of the Cree audiocassettes on 25 compact discs. The collection also contains a recording of the 1995 CBC Calgary radio program "Voices of the First Nations : The Prairies."

Collection consists chiefly of manuscripts produced by Frederick T. Bason, including a handwritten version of the author's manuscript "Summer" (19 leaves, written in 1962) and a two-part typescript of "The Last Bassoon," complete with the editor's corrections (part 1, pages 1-132 and part 2, pages 133-291). File 2 also includes a 24-page booklet of "Fred Bason goes fishing," published in 1959. File 1 also contains the following items: 1. A typewritten note from Fred Bason addressed to the owner of the original manuscript of 'The Last Bassoon,' dated January 1962. 2. A typewritten one-page list titled "Fred Bason has for sale the following splendid books." 3. A two-page handwritten letter dated January 1961, addressed to M. James, written on Fred Bason's author letterhead. In this letter, Bason expresses his gratitude for a cheque for a purchased manuscript, discusses his lectures in England, and mentions potential lectures in Quebec, specifically at McGill University.

Contains a handwritten copy of J. G. Wood's article titled "Unintentional cruelty," which addresses the treatment and management of horses, published posthumously, and which appeared in "Social Notes." Includes a portrait of the author on the title page.

Collection consists chiefly of photographs of Harold N. Segall, Assistant Professor of Medicine at McGill (1949-1960) and President of the Canadian Heart Foundation, Montreal Cardiac Society, and the Quebec Heart Foundation, as well as his parents, brother Jerry Segall, friends, and colleagues. Photographs depict Segall's childhood and early career. There are also some photographs and textual records relating to Segall's association with professional societies and Montreal hospitals, namely the Canadian Heart Association, Montreal General Hospital, and the Jewish General Hospital.

This collection consists chiefly of aerial photographs as well as some stereograms, dated from 1930 to 1976. The first six containers consist of Landsat 1:1 000 000 Prints & Negatives. The photographs depict various geographic and geological features including mountains, deserts, volcanoes, farmland, lakes, and rivers. Some photographs depict roads, settlements, and dams. Canada and the United States features prominently in this collection however there are also photographs of the Caribbean, South America, Africa, Asia and Oceania. There are also documents most of which are indexes to the photographs. There are also shipping transmittals, survey cards, letters, a purchase order, and diagrams with flight lines and photo set numbers. The maps in this collection are of flight lines (some with film roll numbers added), hand-drawn maps of locations in the photographs, geographic maps, and physiographic maps.

Collection consists of three albums containing photographs taken at Grenfell Mission and one framed photograph. Albums feature many photographs of St. Anthony and the region, its inhabitants, the medical staff at the Grenfell Mission, and activities such as dogsledding.

Etchings by Giovanni Battista Piranesi printed in Paris between 1800 and 1809. Sixteen plates numbered I-XVI, with the title plate first used in the second edition of 1761 and the two plates added to the second edition, Pl. II “The Man on a Rack,” and plate V, “The Lion-Bas Reliefs” as well as plate XVI, the reworked “Pier with Chains.” All plates with Roman numerals added in the second editions, numbered I-XVI, including the title plate.

Collection consists of an illustrated manuscript containing a map and brief guidebook to Paris landmarks, created by Nicole Allardet probably during the 1940s or 1950s. The item is inscribed to Vivienne Horne. A folded booklet on heavy grey paper, the guidebook contains twelve panels, ten of which feature a gouache illustrated vignette of a Paris landmark and a short handwritten description in white. The landmarks include the Jardin du Luxembourg, Opera House, Eiffel Tower, the river Seine, the Bois de Vincennes, Notre-Dame de Paris, the Jardin des Tuileries, the Champs-Élysées, Montmartre, and the Luxor Obelisk in the Place de la Concorde. In the centermost two panels is a simple map of Paris showing the landmarks depicted.