The series consists of records created in the fulfilment of the Zoological Society’s mandate and goals to host events, trips, speakers, and to donate to and support worthy causes. This includes event and project planning records with related financial documents and reports, guest lists, communications to members, and correspondence. A large part of this series is concerned with the Society’s whale watching excursions and their whale conservation efforts. These files include an annual pamphlet called Whales Alive! = les Baleines!, flyers, newspaper advertisements and published articles, all promoting whale watching field trips. Others include donations, correspondence, and financial documents relating to issues surrounding conservation. Other types of activities covered in this series are field trips (primarily around Quebec but also a few internationally), film screenings (known as theatre nights), art shows, fundraisers and lectures. The field trips and some events of the Society are documented in 5193 photographs stored in 24 photo albums (1989-2009). Apart from events, projects undertaken by the Society are included, such as their efforts to build a wildlife park in Montreal’s West Island, the conservation of owls, lynxes, birds, turtles and flowers, and their wildlife pavilion at Man and His World.
There are large gaps in the Activities series. The Society’s founding project, the Montreal Aquarium and Dolphin Arena, and their proposal for an ark at Expo ’67 are only included briefly in these records. For more information on these projects, see the Administration series files MSG1164.c5.f11, f12, f13. Also, there are few photos documenting the Society’s activities before 1989.

This series contains book lists and catalogs which document Mappin’s personal antiquarian book collection. Also includes files about Canadian authors’ deposits and archival fonds at Library and Archives Canada. Includes professional correspondence with other antiquarian books sellers, and documents the contents of their personal or donated collections. Contains machine typed personal index cards containing entries for authors, events, printings, etc. File #1210.02.06.05 contains the cover for The Goblin : a Brief History of Canada's Humour Magazine of the 1920s written by John Mappin and Carl Spadoni however the contents are missing.

This series consists of personal correspondence between Farkas and other artists/poets. Both electronic and handwritten mail are present in the files.

This series consists of selected editions of literary magazine White Pelican and Maclean's magazine. This series also includes collected poetry which was published by White Pelican. Stephen Scobie was not the creator for the records in this series. The series is mostly located in Container 5 with a file in Container 4.

This series consists of incoming and outgoing correspondence between Stephen Scobie and others. The files include personal correspondence between Scobie and friends and acquaintances, correspondence regarding business matters between Scobie and various publishers and editors, correspondence with governmental bodies regarding grant applications, and correspondence with universities and other organizations regarding planning for lectures and events. As noted in the file listing, some letters include attached copies of drafts for essays or reviews by Scobie, of which there may be duplicates in Series 4, Non-fiction. Some files within Series 3, 4, and 5 also contain correspondence, which were not separated to preserve original order. The series is mostly located within Container 1, with some files in Containers 3, 4 and 5.

The minutes series comprises eight bound volumes, two publications and one envelope of loose duplicate minutes. The minutes document proceedings from the annual, general, monthly, special, ordinary and extraordinary meetings held by the Society. It consists of the minutes from the Natural History Society (1827-1923), the Natural History Society Council (1827-1922), and the Natural History Society Committees (1906-1908).

The handwritten and typed minutes document the Society’s activities, including lists of members, newspaper articles, donations to the Society, elections, advertisements for sponsored lectures, and reports from committees. Handwritten copies of letters from Dr. Meade, Mr. C.U. Shepard, Major Delafield (File 5.2) and Robert Burn (File 9.1) to the Society as well as letters sent on behalf of the Society (Smithsonian Institute, File 5.1) are included with the minutes.

The reports series has a plethora of information about the functioning of the Society. Three files (10.1, 10.2, 10.3) contain the published and printed reports of the Society covering yearly highlights of activity. They cover the years 1828, 1830-1836, 1854-57, 1859, 1864-1871, 1873-1874, 1877-1878, 1881. Also included for each year are reports from the Treasurer, Librarian and Cabinet Keeper. The reports were signed off by the Chairman or President of that year.

In addition, included in this series is a ledger with Reports from the Indian Committee (file 13.3), with a handwritten report for the end of the year and survey forms. The committee members were W. M. McKay ( President of Committee), George Simpson, D. C. Napier, John Samuel McCord, A. F. Holmes, William Pardey, Robert Armour (Secretary).