* I think you are wrong about the origins of the phrase “the real McCoy” (TES Teacher, June 13). I believe that it refers to Elijah McCoy, an African-American inventor. This may only be one explanation for the origin of the phrase but I really feel you should have included it.
Karen Mears, Wandsworth Ethnic Minority Achievement Service, The Professional Centre, Framiscan Road, South Kensington, London SW7
