The Atlantic Migration, 1607–1860

Marcus Lee Hansen (1892–1938) was an American historian specializing in immigration history, born in Neenah, Wisconsin to Danish and Norwegian immigrant parents. He earned degrees from Central College, the University of Iowa, and Harvard, and served as a professor of history at the University of Illinois from 1928 until his death from chronic nephritis. His most notable work, The Atlantic Migration, 1607–1860, earned a posthumous 1941 Pulitzer Prize for History, and he is known for "Hansen's law" on third-generation immigrant identity revival.