Twachtman, John Henry (twäktˈmən) [key], 1853–1902, American landscape painter and etcher, b. Cincinnati. He studied in Cincinnati under Duveneck and in Munich and Paris, but was influenced principally by the impressionists. Many of his exquisite and atmospheric landscapes in oil and pastel were inspired by the countryside near his home in Greenwich, Conn. He also painted a series of landscapes at Yellowstone Park and at Niagara Falls. He did not live to enjoy the high reputation his work now holds. Twachtman is represented in many American galleries. Characteristic works are Waterfall (Metropolitan Mus.), The Hemlock Pool (Addison Gall. of American Art, Andover, Mass.), and Summer (Phillips Memorial Gall., Washington, D.C.).