Fonds consists of records (originals, printed materials, photographs and motion pictures) that are almost entirely of a professional and research nature, covering Barnes’ general scientific and university work during World War I, a number of special research problems, and his involvement in scientific and social organizations.

His general scientific and university files (1914-1915) contain correspondence, including copies of some of Barnes' outgoing letters on departmental adminstration, Barnes' lectures, publications, scientific apparatus, research problems and the exchange of information. Correspondents include colleagues in other institutions (including Ernest Rutherford), learned societies, and private industry. This series also contains a file on purchases for the University Library, and inventories of Barnes' library.

Far more extensive are the materials on special research problems. These comprise notes, essays and correspondence on the detection of submarines (1915-1917) and on the development of anti-freezing devices for fire extinguisher and sprinkler systems (1917). A report by Barnes on the effect of ice conditions on St. Lawrence navigaton is supplemented by printed background materials and copies, or extracts from other reports. Barnes' work on icebergs is documented by five binders of clippings, photographs, maps and diary notes on research expeditions to Newfoundland (1924-1929). Practical experiments in ice clearance are illustrated by bound notebooks of clippings and photographs, as well as a number of loose photographs showing ice and flooding damage, use of thermite and calcium chloride, apparatus and ice-crushers (ca 1921- 1929). Finally, two reels of 35 mm motion picture film (ca 1930) show Barnes experimenting with a new mercury microthermometer.

Barnes' work as Hon. Secretary of the Canadian Committee of the British Science Guild is documented by correspondence from 1907 to 1919, largely concerning the recruitment of members and officers, but also touching on a survey of science teaching in schools and the Panama-Pacific Exposition of 1917. Less extensive files cover Barnes' involvement in the International Council for the Exploration of the Sea (1912-1914), the Rotary Club (1917) and the McGill Graduates' Society (1919)

These scattered items of correspondence deal with Porter's resignation from the Cincinnati, Hamilton and Dayton Railroad Co. (1892), stock purchases (1907) and other financial matters (1927-1928).

Architectural drawings, photographs and professional correspondence documenting the architectural practice of the Montreal architect Robert Findlay (1859-1951) are found in the CAC archives.

Le fonds de -la CAC réunit des dessins architecturaux, des photographies et de la correspondance professionnelle témoignant des activités de l'architecte montréalais Robert Findlay (1859-1951).

File list:
"Architectural Drawings, 1891-1927, 204 drawings." Twenty-five projects, primarily for domestic architecture in Montreal as well as summer residences in the country surrounding Montreal, are found in the archive. Also included are designs for Calvary Church in Westmount.
"Photographs, 1900-17, 86 photographs." The archive contains photographs documenting finished exteriors and interiors of eighteen projects, mainly domestic architecture. In addition, there are photographs of Calvary Church, Westmount Public Library and the Sun Life Assurance Co. building.
"Professional Correspondence, 1900, 6 cm." Correspondence and specifications regarding the design and execution of the R. W. Reford house and the stables for the F. W. Molson house, both located in Montreal, are included in the archive.

"Dessins architecturaux, 1891-1927, 204 dessins." Vingt-cinq projets, surtout d'architecture domestique à Montréal, de même que des résidences d'été construites dans les environs de Montréal. Le fonds comprend également les plans de l'église Calvary à Westmount.
"Photographies, 1900-1917, 86 photos." Le fonds contient des photos représentant la finition extérieure et intérieure de 18 projets, surtout d'architecture domestique. On y trouve également des photos de l'église Calvary, de la Bibliothèque municipale de Westmount et du siège social de la Sun Life.
"Correspondance professionnelle, 1900, 6 cm." La correspondance et le cahier des charges de la maison R.W. Reford et des écuries de la maison F.W. Molson, toutes les deux situées à Montréal.

The fonds contains original and typescript letters, manuscript notes, newspaper clippings, journal extracts, reminiscences and more, assembled by Harvey Cushing chiefly between 1920 and 1924 during the course of his research for the biography of William Osler. For the biography, Cushing collected and retyped over 7500 pieces of Osler's correspondence, among which are some original letters.

The fonds is separated into three series: Manuscripts, Working Notes and Osler's Correspondence. It also contains photographs, annual reports, publications, clippings, one watercolor painting, one postcard. Osler's correspondence is further arranged in three subseries based chronologically.

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).

Fonds shows Dr. Philip Franklin's relations and activities with Sir William Osler regarding the Post-Graduate Scheme in England and the American Hospital in England during WWI. The fonds contains letters, telegrams and an agenda and printed material regarding a meeting about the American Hospital.

A telegram to George Glassco reports that Gordon Bond Glassco has been wounded in action.

This small file of Van Horne's correspondence concerns McGill affairs between 1901 and 1915. Apart from routine notices of Governors' meetings, there are appeals from professors for funds to purchase equipment, collections and scholarships, letters from Sir William Peterson on the appointment of Carrie Derrick as Professor of Botany, from E.B. Greenshields on the University Magazine and from others, including Sir William Macdonald, Helen R.Y. Reid and R. Tait Mackenzie.

The bulk of Girdwood's papers concern his work in forensic medicine. Other materials cover his research in photography, and his general medical and scientific interests. Girdwood's career as medical-legal consultant is documented by 24 cm of his notes and reports, together with some correspondence, on four poisoning trials: People vs Emma Davis (Malone, N.Y., 1881), Queen vs Provencher and Boisclair (Sorel, 1867), Queen vs Joseph Ruel (St. Hyacinthe, 1868), and Queen vs David Prevost and Damase Brunet (L'Orignal, 1881). There are also coroner's autopsy reports and notes for four cases; Girdwood's memoires of ten cases on which he served as consultant; Rogers and Girdwood's submission to the Home Office, London, on the strychnine test, together with letters to Lancet and the Times on the same subject; and notes on the counterfeiting of stamps (1893). His interest in medical photography is reflected in lists of X-rays taken by him (1898-1899) and reprints of three articles. His general scientific and medical activities are represented by a scrapbook of newsclippings on cholera (1854), a lecture on gold presented to the Natural History Society of Montréal (n.d.), essays on strychnine (1864) and water filtration (1869), a review of a textbook in physiology (1864) and some reprints, including convocation addresses to the Medical Faculty. Finally, there is a manuscript copy of an address to the graduating class of Applied Science in 1881 and a small scrapbook of printed articles by Girdwood's father, G.F. Girdwood, M.D.

This archive contains letters and copies of letters, from the Wisdom sisters to one another, describing their experiences at Royal Victoria College, 1900-1908. There is also a letter from Stephen Leacock, accepting an invitation to deliver an address, and two from Hilda Oakeley to Mrs. Wisdom. Programmes (particularly of R.V.C. plays and sports events), clippings, and photographs are also included. There are also course notes for C.W. Colby's Renaissance history and William Caldwell's history of modern philosophy.