Series consists of correspondence with James family members, including Alice R. James, Dorothea James, Edward H. James, Henry James III, John James, Margaret Mary James (Mrs. Bruce Porter), William James III, Mary James Vaux, and Henry James Vaux.

Series contains correspondence related to Edel's research on James and inquiries regarding James's correspondence, arranged into alphabetical files by correspondent.

Series consists of chiefly of notebooks of transcriptions of letters from Henry James and Edel's notes, based on thousands of James letters that Edel located and consulted during many decades of research. Bulk of transcriptions are from letters dating between 1865 and 1916. Also contains some copies of letters James family correspondence and copies of letters from James Russell Lowell to James.

Series contains duplicates of correspondence.

Series consists of various research files created by Edel in the course of his work on Henry James. The majority of files are copies of original sources, such as the diaries of Theodora Bosquanet, James's amanuensis. Includes numerous off-prints related to James's various novels, Edel's notes on James's letters and correspondents, and ephemera such as book jackets and drafts. Many notes, drafts, and miscellany relate to Edith Wharton and Percy Lubbock.

Series contains clippings and off-prints by various writers

Series consists of reviews of Edel's books on Henry James.

The accounting series consists of three account books detailing different financial dealings and assets of the Natural History Society of Montreal. The accounting details are varied, one being the treasurer’s ledger of income and expenses kept by Treasurers James Ferrier Jr. and E. E. Shelton (file 13.7); another showing closing account balances for 1905, 1914, 1915, and 1916 and sales clippings for properties: 52 University Street Property, 152 & 154 Drummond Street Property, and the 365 Mountain Street Property Diagram of the property of the Natural History Society (file 15.1); lastly an address book shows an alphabetical list of assets and their value, as well as a note in the front tracking “Field Day” surpluses and deficits from 1882-1890 (file 16.3).

The administrative records series contains documents that reflect the structure and mandate of the Society, such as their constitution, acts, by-laws, yearly agenda, bookings, and membership lists. Summaries of meetings provide information of the NHSM’s interactions with other societies, notably the Horticultural Society, and also includes correspondence with society members, lists of addresses. An obituary of Society Librarian Charles Robb and an example of a membership certificate belonging to J. H. Joseph may also be found.

The substantial catalogues series covers most of the inventory of both the Society’s museum and library. Museum catalogues provide detailed information regarding the genus, species and origin of their Mammalia Collection while catalogues of donations to the museum also point to interesting objects in their collection. Library catalogues list publications in the Society’s holdings. The series also provides important lists related to the Journals of Assembly and to the visitors of the museum.