The domestic finances of the Lyman family are documented by Mary Lyman's household account book, 1849, and by family accounts from 1885 to 1889. Correspondence between the Lyman and Corse families covers the period 1820-1827. The remainder of the papers consists of Corse family business letters, 1815-1853; estate documents, largely insurance policies, 1828-1856; Roswell Corse's cash book, 1842-1853; and documents concerning his buildings, 1846; a statement by Roswell Corse concerning his late brother Henry's illegitimate children, 1853; papers of Henry Corse concerning his contribution to the construction of St. Lawrence Hall, 1845-1847; and documents connected with building supplies, 1845-1848, and R.and H. Corse and Lyman business correspondence, 1806, 1842-1846, 1852-1853.

Fonds reflects L.-G. Papineau's daily work as an engineer between the years 1901 and 1905. Each volume is a daily diary, covering a year. Daily entries describe the activities of the people in his office. Most entries are technical: daily follow-ups on public works projects, including in the Montreal and Sorel harbours, Hochelaga, and on the Saint-Pierre River, meetings, finished tasks, and the absence of workers. Some are family related or comments on the news (for example, Queen Victoria's funeral on February 4th. 1901). Weather conditions and water levels are reported regularly, as it influences the pace of work on the construction sites.

Fonds consists of a notebook kept by Louis Gagné of his physics and metaphysics class given by Abbot Demers at the Séminaire de Québec.

Collection consists of an impartial 19th-century transcription of Franquet's "Voyages et mémoires sur le Canada" (https://mcgill.on.worldcat.org/oclc/49159386) by an unknown author, along with its English translation.

For purposes of arrangement, the Lighthall Papers have been treated as one unit. However, for purposes of descriptions, they have been divided into two parts: the W.D. Lighthall papers and the Lighthall Family papers.

The papers of W.D. Lighthall are divided into a number of different series: an Original Series, Letters and Papers, 1881-1946, and a New Series, Letters and Papers, 1865-1954. The greater part of the correspondence is to be found in these two series.

Although more than forty members of the Lighthall and allied families are represented in the collection, only those with significant bodies of papers are mentioned here, including Cybel Wilkes Lighthall, Alice M. S. Lighthall, Anne Dean Lighthall, W. F. Lighthall, and the Reverend Dr. Henry Wilkes, among others.

The collection consists of lecture notes from Saint-Hyacinthe, Quebec, dated around 1873. The lecture is divided into three parts. The first part discusses the origins of textiles, with a particular emphasis on cotton. The second part explores the ribbon, detailing its uses and origins in Normandy, France. The third part addresses industrial progress and modern ribbon manufacturing, and it presents the biography of Jean Baptiste Masselin, the founder of the ribbon industry in France.

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.

These records consist of minutes of meetings of the Presbyterian Committee of Laprairie, 1837-1843, and two registers of baptisms, marriages, and burials at Laprairie, 1839 and 1842-1843.

Le fonds comprend dix lettres adressées à De Salaberry et à certains de ses proches sur divers sujets de 1785 à 1912, un manuel de manoeuvres militaires de Major Michel de Salaberry, 1796, des photographies, des cartes postales, un spicilège (ca 1834-1841) et quelques documents relatifs à Frederick George Heriot (ca 1818).