The fonds chiefly consists chiefly of records related to the editing and publishing work of the Muses' Company press. The fonds consists of seven series: manuscripts; financial records; publications; correspondence; records related to the Association des éditeurs anglophone de Québec; records relating to the Association of Canadian Publishers; and records relating to the Literary Press Group. Most of the records were either created or accumulated by Endre Farkas in relation to the Muses’ Co. publications between 1980 and 1995. Records relating to publishing include manuscripts of works, page proofs with corrections, editors’ and authors’ notes, published books, and publicity materials. Other production records within the fonds include correspondence, pamphlets, photographs, layouts, and drawings for covers. These manuscripts also often have accompanying materials including photos and correspondence, in particular for the Dance Agenda project. There is also correspondence including exchanges with authors such as Ken Norris, Kenneth Radu, Katharine Beeman, Elias Letelier-Ruz, Ian Stephans, and Sharon H. Nelson as well as notes to Leonard Cohen. The company's financial records in the fonds consist income tax receipts, statement of earnings, reports of sales of books, buyers, quotes, invoices, funding applications, contracts and correspondence. Notable financial records include book sales from the McGill University Bookstore, as well as the universities of Toronto, Waterloo, Calgary, and Maine. Other records include materials from the Association des éditeurs anglophone du Québec (1991-1994), the Canada Grant Council, the Association of Canadian Publishers, the Literary Press Group. Also represented is the Quanglo Tour itinerary including posters, postcards, and advertisements (1994-1995).

"Laure", a novel in French, is ascribed to Maria Neglet by a pencilled note in another hand.

The fonds consists of manuscripts and drafts of literary compositions and other working documents, as well as professional and personal correspondence.

Fonds consists of working files, office files, galley proofs, and other materials related to the operations of the Porcupine's Quill Press.

The fonds contains professional and private correspondence from Emma Albani, the first Canadian-born singer of international fame, to Parisian publisher Henri Heugel.

The collection consists of correspondence, research files, manuscripts, journals, and ephemera created and accumulated by writer and scholar Leon Edel, who was notably the editor and biographer of Henry James as well as Edmund Wilson.

Allison's memoirs of Napoleon are accompanied by his watercolour drawings of Napoleon and St.Helena.

The fonds reflects the scientific and literary outreach activities of the Montreal Natural History Society over the course of its existence and contains correspondence, minutes, financial records, council and committee reports, membership lists, donation lists, catalogues of holdings, newspaper clippings, lecture advertisements and weather maps. In addition, the fonds includes reference material to other societies and information regarding the publication and creation of the Canadian Naturalist and Quarterly Journal of Science, Canadian Naturalist and Geologist and the Canadian Record of Science.

The fonds is composed of the following series: 1) Accounting Records (1860-1917); 2) Administrative Records (1833-1887); 3) Catalogues (ca.1829-ca.1925); 4) Correspondence (1871-1896 with gaps); 5) Essays and Lectures (1829-1852); 6) Minutes (1827-1832,1844-1923); 7) Montreal Microscopical Society (1884-1906); 8) Reports (1828-1881 with gaps); 9) Weather Maps (1895-1897).

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.

Collection consists of 57 illustrations of birds, eggs, snakes, and plants by James Forbes chiefly to illustrate his work "Oriental Memoirs," published in four volumes between 1813 and 1815. The majority of the illustrations are either engraved or hand-drawn and then coloured, and have been cut out and mounted on paper. In many cases, a background has been drawn in and coloured or partially coloured. Approximately thirty of the images depict tropical birds, many from the Indian subcontinent, as well as some from Brazil and Australia. A number of these drawings also feature insects, particularly butterflies, and trees and flowers. Fifteen drawings depict bird eggs, including many of forest birds. The images generally contain captions by Forbes or a contemporary, identifying the subject of the drawing. Some birds are unidentified. Numerous drawings also contain species identifications or annotations in pencil by Henry Mousely, librarian of the Blacker Wood Library at McGill University during the 1920s and 1930s. These drawings are tentatively dated to approximately 1811. A note on one drawing indicates that it was originally based on drawings created during Forbes's voyages during the 1780s, then recopied in 1811. Items 44 through 57 depict snakes and reptiles and are tentatively dated to between approximately 1811 and 1818, based on a small number of drawings which are signed and dated. Many of these drawings of snakes and reptiles feature as plates in Patrick Russell's "A Continuation of an Account of Indian Serpents: Containing Descriptions and Figures, from Specimens and Drawings" (1801).