Woodhead, E. (1991). Trademarks on base-metal tableware: Late 18th century to circa 1900 (including marks on Britannia metal, iron, steel, copper alloys, and silver-plated goods). National Historic Sites, Parks Service, Environment Canada.
Chicago Style (17th ed.) CitationWoodhead, Eileen. Trademarks on Base-metal Tableware: Late 18th Century to Circa 1900 (including Marks on Britannia Metal, Iron, Steel, Copper Alloys, and Silver-plated Goods). Ottawa: National Historic Sites, Parks Service, Environment Canada, 1991.
MLA (9th ed.) CitationWoodhead, Eileen. Trademarks on Base-metal Tableware: Late 18th Century to Circa 1900 (including Marks on Britannia Metal, Iron, Steel, Copper Alloys, and Silver-plated Goods). National Historic Sites, Parks Service, Environment Canada, 1991.