This series consists of research, writing, and correspondence files relating to Casey Wood's major and minor publications and unpublished works, as well as, others assisting in Wood's publications, research, or writing about Wood. The majority of the research and writing materials for Wood's published and unpublished works were created between 1920-1940, while other materials collected during Wood's life, those associated with his memoir and obituary, date from approximately 1850-1943.
Some prominent writings by Wood include “Introduction to the Literature of Vertebrate Zoology” (1921-1956), his unpublished memoir (ca. 1850-1939), “Fundus Oculi” (1911-1934), Wood family history (1920-1940), “Birds of Fiji” (1920-1928), “Through Forest and Jungle in Kashmir and North India” (1921-1934); Persian, Arabic and Hindustani manuscripts (1927-1934); and “The Art of Falconry” (1942).
The series consists of many volumes and files containing a number of record types including manuscripts, typescripts, proofs, publications, photographs, correspondence, clippings, printed material, postcards, journals, administrative and financial records, and artwork. Some of the volumes are scrapbooks containing many of these materials mounted within, while others include similar materials bound within. These volumes do not necessarily have a clear organization but are sometimes arranged chronologically or by correspondent.

There are 2230 incoming and outgoing pieces of correspondence including letters, postcards, notes, telegrams, and cards. Subseries 1) Introduction to the Literature of Vertebrate Zoology includes 1313 pieces of correspondence, the largest number of correspondence within the collection.

Fonds consists of autographed signed letter from Workman to John Auld of Montreal on Workman’s engraved stationery (Matthews lithographer), 25 November 1852.

This subseries consists of other research, writing, and correspondence files related to Wood's research and writing activities (1852-1925), writings of others assisting in Wood’s research projects or written about Wood (1936-1943), and volumes containing multiple publications by Casey Wood from 1852-1943, but predominantly 1920-1938. Some of these volumes include writings of other authors as well. The subseries is composed mostly of publications, manuscripts, and correspondence, along with photographs, clippings, book dust covers, feathers from John III, and printed materials pertaining largely to ornithology, falconry, and Wood's research.
Included in this subseries are 661 incoming and outgoing correspondence (1914, 1927, 1933-1940) including letters, postcards, and telegrams. Some of the individuals represented within the subseries include G. R. Lomer, Elizabeth E. Abbott, Margaret E. Hibbard, Dr. Maude Abbott, Dr. Cresswell Shearer, Marjorie Fyfe, Alan H. Wood, Samuel Casey Wood III, Arthur William Head, H. Gronvold, H. Kirke Swann, Alexander Wetmore, Dr. Andreas Nell, Elliott Coues, George Arliss, Duke of Wellington, Professor Arthur Willey, Dr. Witmer Stone, John Still, E. C. T. Holsinger, Dr. Burton Chance, Wladimir Ivanow, John M. McWilliam, Dr. Max Meyerhof, W. L. Sclater, Harry Harris, Dr. Arnold C. Klebs, Professor Alonzo Taylor, Dr. Harold Gifford, David Nutt, William Wrigley Jr., Professor W. P. C. Zeeman, Eileen Thompson, William Thornwall Davis, H. S. Swarth, E. Edward Newton, Joseph Pearson, R. T. Gunther, Dr. Jon Pearson, Sir George Perley, J. Wilkes, Edward Von S. Dingle, George Edwards, W. E. Powell, L. J. Griffin, Robert Moore, and Major Chester Davis. Book publishers and dealers represented include Wheldon and Wesley, G. E. Stechert and Co., Bernard Quaritch Ltd., R. Friedlander and Sohn, K. F. Koehler’s Antiqarium, Foliophiles, Sotheby and Co., Francis Edwards, Vitty and Seaborne Ltd., Sun Engraving Co., Dulau & Co., Ltd., Samuel N. Rhoads, and Franklin Bookshop.
Topics and research projects within the subseries include ornithology, aviculture, bird protection, fossil eggs, zoology and sea life, collection and financial records for McGill Libraries and other institutions, McGill Library exhibits, the Feather book, travel and research, professional and personal lives, Wood’s ancestry, events Wood attended, politics and crime, Dr. Joseph Grinnell, Sir Henry and Elizabeth Gwillim, James Graham Cooper, John III’s painting and life, Emma Shearer Wood library boo plate, bird and zoology prints and other artwork, the dodo bird and related art, Sinhalese Olas, coins, and Persian manuscripts, ayurvedic medicine, Dominion Parliament building, “Fundus Oculi of Birds,” “An Introduction to Literature of the Vertebrate Zoology,” “Coloured Plates of the Birds of Ceylon,” Benevenutus Grassus’ de Oculis, Tadhkirat of Ali ibn Isa translation, Frederick II’s de Arte Venandi cum Avibus and falconry, “Catalogue du Fonds de Paul Lechevalier,” “James Craw Portrait of Alexander Wilson,” “Monograph of the Birds of Prey,” and other manuscripts.
Places referenced in this subseries include the British Museum, McGill University, Emma Shearer Wood Library, San Francisco, England, Barbados, New Zealand, Fiji, Oceania, Switzerland, India, Sri Lanka, and others.

Fonds primarily documents Armstrong’s social life. They consist overwhelmingly of correspondence for the period 1909-1933. Letters from his professional colleagues, such as Sir William Osler, F.J. Shepard, Edward Archibald, William J. Mayo and others in the Mayo Clinic, are concerned largely with personal greetings, association memberships, or Medical Faculty business, particularly honorary degrees. Armstrong's non-medical correspondents include Lord Beaverbrook, Lord Atholstan, Sir Hugh Allan, Arthur Meighen, George Foster and Herbert Symonds. Topics include politics, Armstrong's war work and honours, some medicals matters, and personal news. Appended to this main series are obituaries and letters of sympathy to Armstrong's widow (1933), six photographs, including one of Armstrong in an operating room, and admission cards and diplomas from Armstrong's student years.

Collection consists of 36 autograph letters written to James Cameron and his son Archie. The correspondence includes letters by friends, associates, and members of the Cameron family in Toronto, Lake Beauport, Scotland, England, Hull, and Montreal. Subjects include family news, freemasonry, business (regarding deed of sales), factory work in Toronto, curling, and an April Fools' Day letter. With three extant envelopes.

Correspondence, accounts, journals maps, etc., documenting Bissett’s career with the Hudson’s Bay Company. The Photostats (in C.1 and C.2) include Bissett’s journal and accounts at the Red River, 1854-1855, and a journal “Lachine to the Sandwich Islands” 1858-1859. There are also journals for 1859 and 1867. The original documents (in C.3) include correspondence with the Hudson’s Bay Company, 1858-1875, and accounts, 1860-1873. There are Bissett’s commissions as Chief Trader (1858) and as Chief Factor (1872), and a list of Chief Traders and Factors, 1855-1879. There are also some plans / maps, sketches, and photographs including a sketch of the Hudson’s Bay Post at Honolulu, ca. 1860.

Gould's papers fall into two series. Family correspondence covers the years 1856 to 1860, when Joseph and his brother Charles were travelling in Europe, and consists of letters home from both young men, and their parents' replies. Manuscript music comprises two volumes of church anthems, with some organ music; some are original compositions by Gould and Samuel Warren. Related to this is Gould's brief manuscript account of the origin of the Mendelssohn Choir. Some family photographs are also included.

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.

Letters and papers relating to employment with the Hudson’s Bay Company. These include letters of appointment, official announcements, lists of officers of the Hudson’s Bay Company, and an inventory the posts and officers in the Albany River district.