Catalogue of high-class modern pictures and water-colour drawings of H.T. Morton, Esq., deceased, Mrs. Frank, deceased, the property of a gentleman, and from numerous other sources (1899)
Christie, Manson & Woods · London : Christie, Manson & Woods · leaf 2
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H.T. Morton · Mrs. Frank
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.