The bulk of Eakins' papers concern his work as a geologist and consultant for the mining industry. His Peruvian period is covered by correspondence, reports and newsletters on the San Jose prospect for the Cerro de Pasco Corporation, 1952-1956. His work with Mineral Management Ltd. (1956-1959) is documented by correspondence on mining investments and exploration. There are also files raised by Eakins for his reports on the Axel Heiberg Island project, 1962-1969 and Eakins' participation in the first Canadian workshop on "Education in the Earth Sciences" (Sudbury 1971), and the International Geological Conference of 1972. There is also correspondence, memoranda and notes relating to the history of geology at McGill and in Québec, and some correspondence with Geology Department staff members and students.

Includes correspondence, journals, books, manuscripts, photographic material, audio tapes, course material, research material, postcards, book reviews, conference proceedings, thesis, and articles for publication.

The Nobbs fonds consists of the work of Percy Erskine Nobbs, George Taylor Hyde, Nobbs and Hyde, Nobbs and Valentine, and Nobbs and Nobbs. 526 projects are documented in the Percy Erskine Nobbs Fonds. Architectural drawings form the core of the fonds, providing a comprehensive listing of the drawings by Percy Nobbs and his associates. Arranged chronologically, the inventory reflects respectively the development of the partnerships Nobbs and Hyde (1910-1944), Nobbs and Valentine (1945-1950), and Nobbs and Nobbs (1950-1960). Hugh A. I. Valentine worked only briefly with Nobbs, spending the bulk of his career with the Bell Telephone Company of Canada. His commissioned drawings and student notebooks cannot be directly related to his work with Nobbs, but are nonetheless described in subfonds 8. Subfonds 6 and 7 describe Percy Nobbs's personal papers and three-dimensional objects designed by him which are in the Canadian Architecture Collection.

Fonds consists of general professional correspondence, 1913-1961, including Maass’ outgoing letters for 1946-1954. Topics covered include defence research, the Pulp and Paper Institute, N.R.C. appointments, visits of scientists, and political questions (e.g. letters to and from Lester Pearson on NATO and the nuclear deterrant). There are also letters of recommendation by Maass, and personal communications from colleagues. A special binder of congratulatory letters marks his election to the Royal Society (1940), and there are similar files on his retirement (1955), and of condolences to his widow at his death (1961). Maass also assembled photostat copies of letters by eminent 19th century British scientists addressed to his great uncle, Prof. Plucker of Bonn.

Studies and research are documented by a physics laboratory notebook (1908-1909), and a "summary of data on hydrogen peroxide" collected in collaboration with W. Hatcher (1918-1919). A few addresses on the Canadian Institute of Chemistry (1939), the Pulp and Paper Research Institute (1945), and the relation between the Defence Research Board and the universities are included.

This subseries consists of many of Wood's major publications in various iterations such as manuscripts, typescripts, page proofs, and galley proofs. Additionally, this subseries contains other manuscripts, research notes, photographs, prints or illustrations, correspondence, book reviews, and other materials relating directly to Wood's research projects and publications. The material is dated from 1904-1942 but focuses predominantly from 1913- 1934. Much of the subseries is composed of bound volumes, some of which contain multiple record types, either bound or mounted within the volumes.
The research and writing projects focus on the following topics and geographic regions: ornithology, Fundus Oculi (1911-1934), Wood’s family history (1920-1940), South America (1920-1921), Fiji and Fiji Islands (1920-1931), fossil eggs (1923-1925), flowers and meadows in Switzerland (1924-1934), “An Introduction to the Literature of Vertebrate Zoology,” aviculture (1925-1928), New Zealand, medieval Persian manuscripts (1927-1934), Benevenutus Grassus’ de Oculis (1930), John III, Kashmir and North India (1921-1934), Ceylon (1925, 1928, 1934), "the Art of Falconry" (1938?-1942), and Ali ibn Isa (1935-1936).
Other contributors to some publications and manuscripts include Marjorie Fyfe, Alexander Wetmore, Wladimir Ivanow, Arthur William Head, Dr. Andreas Nell, W. J. Belcher, William C. Morgan, and Marion C. Tallmon.
This subseries also contains 145 incoming and outgoing pieces of correspondence including letters and notes. Some individuals addressed include Arthur William Head, Christopher Leggo, Lillian Bates, Elizabeth E. Abbott, Cora Raymond, Dr. Richmond, W. J. Belcher, C. S. Walis, Theodore Hamblin Ltd., James R. Slonaker, and R. R. Donnelley and Sons Co.. This subseries also includes photographs of Wood’s family, professional colleagues and friends, and research and publications.

Subfonds contains twelve projects documented by 213 architectural drawings (1943-1950) including: additions and alterations to the McGill University Pathology Building, a Henry Birks and Sons store in Victoria, BC, a War Memorial Monument in Westmount, alterations to Christ Church Cathedral in Montreal and alterations to the Royal Montreal Curling Club. Non-architectural projects documented in drawings include the Carlisle Memorial Sedilia, a processional cross and war names inscription panels for Christ Church Cathedral (1946-1948).
"Photographs, 1947, 2 photographs." The Birks store in Victoria is documented by photographs of the finished exterior and interior (1947).. Three projects include correspondence files: War Memorial Monument in Westmount, alterations to St. George's Church in Drummondville, PQ and decorations for the University Club in Montreal (1947-1951).

Dessins architecturaux, 1943-1950, 213 dessins: Les douze projets illustrés par des dessins architecturaux comprennent, notamment : des annexes et rénovations apportées au pavillon de l'Institut de pathologie de l'Université McGill, un magasin de la compagnie Henry Birks and Sons à Victoria (Colombie-Britannique), un monument aux morts à Westmount, des réfections apportées à la cathédrale Christ Church de Montréal et au Royal Montreal Curling Club.
Autres dessins, 1946-1948, 12 dessins: Au nombre des projets non architecturaux illustrés par des dessins, signalons la Sedilia Carlisle Memorial, un crucifix de procession, et les panneaux d'inscription du nom des soldats morts au champ d'honneur réalisés pour la cathédrale Christ Church.
Photographies, 1947, 2 photographies: Le magasin Birks de Victoria est représenté par deux photographies qui en montrent la finition extérieure et intérieure.
Correspondance, 1947-1951, 12 cm: Trois projets sont assortis d'une correspondance.: le monument aux morts de Westmount, les rénovations apportées à l'église St. Georges de Drummondville (Québec) et des ornements pour le University Club de Montréal.

Consists primarily of architectural drawings (1951-1954, 33 drawings) as well as records related to architectural operations, correspondence, and other papers. Included are drawings of alterations to Christ Church Cathedral in Montreal and proposals for naval memorials in Halifax at Point Pleasant and Citadel Hill Park. Also contains 1 photograph, 1951, of Christ Church Cathedral. Two projects have accompanying correspondence: alterations to Christ Church Cathedral and the Point Pleasant Naval Memorial (1951-1954).

"Dessins architecturaux, 1951-1954, 33 dessins." Notamment les plans des rénovations apportées à la cathédrale Christ Church de Montréal et des propositions de monuments navals pour Point Pleasant et Citadel Hill Park (Halifax).
"Photographies, 1951, 1 photo." Une photo de la cathédrale Christ Church.
"Correspondance, 1951-1954, 9 cm." Deux projets s'assortiment d'une correspondance : les rénovations apportées à la cathédrale Christ Church et le monument naval de Point Pleasant.

"Architectural Drawings, 1910-45, 9835 drawings." The wide variety of projects designed or altered by Nobbs and Hyde include urban and rural domestic architecture, school architecture, ecclesiastical architecture, the University Club in Montreal, the Arts Building of the University of Alberta and numerous buildings for the Henry Birks and Sons company. Their extensive work for McGill University includes designs for the McCord Museum, an extension to the Redpath Library, the Pathology Building, proposals for gymnasiums and residences, the Pulp and Paper Research Institute and the Field House, Percival Molson Stadium.
"Other Drawings, 1912-51, 425 drawings." Included are designs for war memorial tablets and windows, furniture, gravestones and fittings. A large group of drawings contains designs for commemorative blocks for the Canadian Battlefields Memorials Commission. Also noteworthy are the designs for decorations executed for McGill University for the royal visits of 1939 and 1951.
"Photographs, 1910-40, 660 photographs." Photographs documenting various stages of projects include domestic, school and ecclesiastical architecture, the Arts Buildings of the University of Alberta, a Birks store in Saskatoon, and Montreal projects such as the Redpath Library extension, the Drummond Medical Building, the Royal Victoria College extension and alterations to the Erskine and American United Church.
"Specifications, 1918-38, 22 cm." The archive contains specifications for eleven projects including additions and alterations to a school in Trois Rivières, alterations to St. George's Church in Lennoxville, alterations to the Pulp and Paper Research Institute and alterations to the Birks store in Montreal.
"Correspondence, 1912-55, 50 cm." Twenty-one projects have correspondence. They include the University Club, a proposed War Memorial Museum in Regina, the Pulp and Paper Research Institute, the Royal Victoria College extension and the McGill decorations for the royal visits of 1939 and 1951.
"Clippings, 1915-28, 12 cm." Included are clippings for a proposal of a general scheme of future development for McGill University in 1920-3, an imperial war graves plot and domestic architecture projects.
"Notes, 1929-34, 9 cm." Three projects contain notes: the Henry Birks and Sons store in Calgary, alterations to the Château Richer Church, PQ and the Motor Building in Montreal.
"Trade Catalogues, 1922, 1 item." The 1922 alteration to the Pathology Building at McGill University includes a trade catalogue.
"Article, 1919, 1 item." A proposal for the development of Evangeline Park, Grand Pré, NS includes an article.

"Dessins architecturaux, 1910-1945, 9 835 dessins." La très grande variété de projets dessinés ou modifiés par Nobbs et Hyde comprend des projets d'architecture résidentielle urbaine et rurale, des écoles, des immeubles à vocation religieuse, le University Club de Montréal, le pavillon des arts de l'Université de l'Alberta et plusieurs immeubles réalisés pour le compte de la société Henry Birks and Sons. Leurs nombreux travaux pour le compte de l'Université McGill comprennent notamment les plans du musée MeCord, une annexe à la bibliothèque Redpath, le pavillon de l'Institut de pathologie, une proposition de gymnases et de résidences d'étudiants, l'Institut de recherche sur les pâtes et papiers ainsi que Field House, au stade Molson.
"Autres dessins, 1912-1951, 425 dessins." La collection comprend des dessins de tablettes et de vitraux destinés à des monuments aux morts, des dessins de meubles, de pierres tombales et d'accessoires divers. Bon nombre de dessins sont des blocs commémoratifs réalisés pour la Commission canadienne des monuments aux morts. Signalons en outre des esquisses de décorations exécutées pour l'Université McGill à l'occasion des visites royales de 1939 et 1951.
"Photographies, 1910-1940, 660 photos." Ces photos, qui illustrent des projets à divers stades d'exécution, se rapportent à des constructions à vocation résidentielle, scolaire ou religieuse, le pavillon des Arts de l'Université de l'Alberta, un magasin Birks à Saskatoon et divers projets montréalais dont l'annexe à la bibliothèque Redpath, le centre médical Drummond, l'annexe au collège Royal Victoria et la réfection de l'église Erskine and American United.
"Cahiers des charges, 1918-1938, 22 cm." Le fonds réunit les cahiers des charges de 11 projets, notamment d'une annexe et de rénovations apportées à une école de Trois-Rivières, de rénovations apportées à l'église St-Georges de Lennoxville, de rénovations apportées à l'Institut de recherche sur les pâtes et papiers et au magasin Birks de Montréal.
"Correspondance, 1912-1955, 50 cm." Vingt et un projets ont donné lieu à de la correspondance, notamment le University Club, une proposition de musée de la guerre à Régina, l'Institut de recherche sur les pâtes et papiers, l'annexe au collège Royal Victoria et les décorations réalisées pour le compte de McGill à l'occasion des visites royales de 1939 et 1951.
"Coupures de presse, 1915-1928, 12 cm." Notamment des coupures de presse traitant d'un éventuel projet d'aménagement pour l'Université McGill en 1920-1923, un cimetière de guerre et divers projets d'architecture résidentielle.
"Notes, 1929-1934, 9 cm." Trois projets sont annotés: le magasin Henry Birks and Sons de Calgary, les rénovations apportée à l'église Château Richer (Québec) et le Motor Building de Montréal.
"Catalogues, 1922, 1 article." Les rénovations apportées au pavillon de l'Institut de pathologie de l'Université McGill en 1922 s'assortissent d'un catalogue commercial
"Article, 1919, 1 article." Une proposition d'aménagement du parc Évangéline, à Grand Pré (Nouvelle-Écosse), est accompagnée d'un article.

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 consists of correspondence with the pediatrician Dr. Alton Goldbloom of Montreal. It gives a picture of pediatrics and parental concerns at the time. The fonds contains 30 letters.