Fonds contains the business records of Robb Engineering Co. Ltd., including an engine record book (1893-1902); deeds, indentures and agreements (1879-1905); plans, catalogues and photographs (1890-1950); engines and boiler plans (1898-1956); engine and boiler specifications; patent records (1886-1923); engine and boiler registers; engine indexes (1893-1930); correspondence; and other records.