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The Progress of Civilization; The Forge, Commerce, and Education (mural study, State Capitol, Des Moines, Iowa) (1905~1906) --Kenyon Cox (美国艺术家, 1856-1919)
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Figure study for The Hours, mural at the state capitol building in Harrisburg, Pennsylvania, 1902~1911 (1981) --Edwin Austin Abbey (美国艺术家, 1852 - 1911)