About half of Donald's papers consist of diaries giving brief daily records of his professional and sometimes personal activities from 1918 to 1981. The remaining files fall into two series. Essays and addresses, 1919-1962, largely on economic aspects of the chemical industry, were addressed to professional organizations and commercial bodies such as the Engineering Institute of Canada, the Canadian Chemical Association, the Canadian Chamber of Commerce, and the Industrial Development Board of Manitoba. More informal speeches include a radio talk on jobs in the chemical industry, 1938. Personal materials comprise some family, legal and investment records, 1940-1952, and undergraduate essay on medieval universities, 1910, correspondence related to an annuity fund set up by Donald for Jessie Henderson, secretary and librarian of McGill's Chemistry Department (1946-1961), and a file of press releases and congratulatory letters on Donald's receipt of the Chemical Industry Medal, 1952-1953.

"Architectural Drawings, 1894, 4 drawings." Included are drawings for an addition to the house of Arthur E. Abbott in Senneville, PQ.

"Dessins architecturaux, 1894, 4 dessins." Notamment des dessins d'une annexe à la maison d'Arthur E. Abbott de Senneville (Québec).

Fond contains solely glass slide negatives. Many slides depict the McGill campus between the years 1918-1921, including the Strathcona Medical Building, as well as the Royal Victoria Hospital. Other subjects include street scenes taken in Montreal after the end of the First World War and the Lockharts' family life during the early 1920s.

This author's manuscript of What he cost her (1877), contains corrections.

"Architectural Drawing, n.d., 1 drawing". Included is a drawing in the archive of the façade of the American Presbyterian Church on St. James Street in Montreal. This drawing has not been described

"Dessin architectural, s.d., 1 dessin." Notamment un dessin de la façade de l'église American Presbyterian, sur la rue Saint-Jacques à Montréal. Ce dessin n'a pas encore été décrit.

The James Morrison papers are a collection of documents chiefly related to James Morrison's activities as a trader and merchant in Montreal. The papers also include some material related to Morrison's family, including legal documents and genealogical research conducted by his descendents. The documents in the James Morrison papers cover a period beginning 18 September 1651 and ending in approximately 1912, but focusing primarily on 1767 through 1800. The fonds represents Morrison's business dealings in Quebec, Ontario, the northern United States, and England, as well as his family life in Montreal and connections with relatives in Baltimore, Ontario, and Jamaica.

The papers are arranged into three series: 1 - Journals, 2 - Correspondence, and 3 - Financial and legal records. Documents in these series include a bound journal, correspondence, contracts, deeds of ownership, power of attorney, birth and marriage certificates, bills of sale, invoices, accounts, descriptions of political and military events, and genealogical notes.

The fonds consists of two letters from James Mills to Principal Sir Arthur Currie dated July 31 and August 5 1922. Both letters refer to the appointment of a principal to Macdonald College and the July letter has a typed copy with lines underlined in red ink. Included is a note from Currie to E.W . Beatty stating that a copy of the Mills letter was enclosed.

These papers comprise copies of addresses delivered to the Society.

These McGill papers are entirely concerned with his property and estate. They comprise legal documents and copies of letters (some in McGill's hand) concerning his land holdings on St. Paul St., Montréal, in Stanbridge, and in Detroit. McGill's cash book, 1809-1815, and copy by W.D. Lighthall of a deed of conveyance to McGill of some land formerly occupied by the city fortifications, 1805, are also included, as is a blue-print and sketch by W.D. Lighthall of the site of McGill's St. Paul St. house. Estate papers comprise a probate of McGill's will, copied by Alice Lighthall, and his executor's cash book.

McGill's papers are of both a personal and a business nature. Personal materials consist of almanacs, 1801, 1802, 1812, containing short, dry diary notes; a power of attorney from McGill to Duncan Cameron, 1809; photocopies of two letters to his business associates John Askin and Isaac Todd, 1812; and copies of his will, 1813. His business interests are represented by the journal of the firm of James and Andrew McGill, 1797-1814. Four documents concerning McGill's property and its boundaries, 1798, 1803 are contained in McGill University Administrative Records, Record Group 4, c.437-c.438.