Fonds documents Michel Brisebois's work as a rare books curator and librarian, and antiquarian bookseller. The records include extensive correspondence from approximately 1966 to 1994 (textual and on diskette), as well as evaluations of libraries and archives including the Archives nationales du Québec, the McCord Musum, the McGill University Libraries, the Université de Montréal, Université du Québec à Montréal, and others. The fonds also contains Brisebois's agenda books, catalogues, and financial records, as well as documents relating to the Antiquarian Booksellers Association of Canada.

This fonds contains material related to the writing career, environmental activism, and personal life of Mona Elaine Adilman. The documents cover a period between approximately 1935 and 1991. Much of the material relates to Adilman's poetry, fiction, and essay writing. In addition to manuscripts of poetry, books, and essays, there are research materials, promotional materials, grant materials, and correspondence related to writing and publishing. There are also materials related to her music writing.

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).

The collection, previously held at McGill University, contains a significant amount of information concerning the latter years of Napoleon’s reign (between approximately 1810-1815), with documents relating to the Armistice at Pleswitz and the diplomatic negotiations surrounding the Treaty of Fontainebleau, including records of day-to-day negotiations concerning Pleswitz and Fontainebleau. Diplomatic dealings between Metternich and Caulaincourt are also heavily represented. Folder 17 contains an unpublished description of the post-Waterloo Hundred Days by Caulaincourt. Caulaincourt recounts a broad narrative from the defeat at Waterloo to the Bourbon Restoration, including important descriptions of the question of succession and of the final push made by the Allies to restore Louis XVIII to the throne.

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 collection comprises letters likely from Niccolo dell'Antella to Cardinal Cammillo Guidi. Contains six hand-delivered memos ("per sua mano"), via a third party, addressed to "Dotto Mon.(Signor) Cav(aliere) Camillo Guidi," which likely accompanied other documents. Likely attribution to Rocco (Niccolò) dell'Antella.

Collection of correspondence between the years 1818 and 1828, predominantly on the matters of The Society of Antiquaries of London, addressed to Daniel Lysons, a British antiquarian and topographer. Comprises 25 letters mounted on paper. The first letter of September 5, 1818, is addressed to Samuel Lysons (1763-1818).