Folder consists various documents compiled by Joseph G. S. Hudson. Some titles include: "Sections of the Sydney Coal Fields, Cape Breton", "Royal Commission on Coal Suppliers", "where the greatest depths were reached", "Nova Scotia Steel and Coal Company", "Sub-marine working of coal seams", "Accidents in mines Commission", "Under sea working of coal seams - Royal Commission on Coal supplies", Sub-marine areas - the mining law of Nova Scotia" and "Notes and explanations, Mines and minerals act".

Fonds consists of materials regarding the professional activities of Shirley A.M. Conover, including correspondence, studies, proposals for research and reports submitted to companies, research centres and government departments by MacLaren Plansearch Ltd., Plansearch Inc., MacLaren Atlantic Ltd., MacLaren Marex Inc., and Hardy Associates (1978) Ltd.