The fonds consists of the personal papers and photographs of the Rennie family of St. John's, including sketches by Marjorie Rennie (1906), and by R. M. Rennie (1921 and undated); bank statements (1923-31, 1938); correspondence (1931,1936, 1937); Christmas cards (from Prime Minister of Newfoundland-1928, and Royal Canadian Legion-1984); poetry; song lyrics (1866); railway voucher for W. Picco for Royal Canadian Navy (1916). The fonds also includes newspaper clippings.

The fonds consists of records relating to the Rennie businesses including, client list (1982, 1984), R.M. Rennie professional appointment, correspondence with Agriculture Canada (1977), correspondence relating to property ownership (1892, 1893, 1896, 1963), record of labour book (1896-1897), documents relating to the Rennie Baking Company (1902, 1907), undated records of supplies for Rennie's Mill, sales and receipt books (1899-1900, 1956-1981), property maps of Whitbourne property for the National Defence (1742); Corner Brook Bowater's pulp and paper mill (1945); and lot of land leased to U.S.A (1942). The fonds also includes newspaper clippings relating to the Rennie businesses.