Henri de Toulouse-Lautrec was a painter and lithographer.
Toulouse-Lautrec knew Whistler and visited him and his wife in Paris in the early 1890s. Beatrice Whistler drew a caricature of him when he visited the Whistlers' studio at that time (GUW #06829).
Bénézit, E., Dictionnaire des Peintres, Sculpteurs, Dessinateurs et Graveurs, 8 vols, Paris, 1956-61; Grove Dictionary of Art Online, ed. L. Macy.