In The American book of beauty, or, Token of friendship (Hartford, 1847?]. plate preceding p. [65]., Full-length portrait of Miss Ketchum (of Boston), standing holding a small dog against her chest with her right arm and a handkerchief in her left hand., Fictitious person? Sitter identified as the singer/actress Mrs. Charles Martyn (i.e., Elizabeth Inverarity Martyn) on a plate published by Longman & Co., 1 October 1840. Cf. National Portrait Gallery, London. http://www.npg.org.uk/collections/search/portrait/mw80781/Elizabeth-Ma
