- (informal) A local stamp inscribed "L. MCl." to represent the ship Lady McLeod, produced by David Bryce, the owner of the ship, in Trinidad in 1847. It was the first stamp produced in a British colony, but is considered by many to be a Cinderella.
- Douglas and Mary Patrick, The Musson Stamp Dictionary, Toronto, Musson Book Company, 1972.
- Scott Standard Postage Stamp Catalogue, Sidney (Ohio), Scott Publishing Co., multiple editions