Allen Johnson (1870–1931) was an American historian, teacher, biographer, and editor, most notably of the Dictionary of American Biography. Johnson was born in Lowell, Massachusetts, where his father, Moses Allen Johnson (whose ancestor came to Massachusetts in 1630) worked for the Lowell Felting Mills. His mother was Elmira Shattuck. Johnson was the valedictorian of his high school in 1888, and then attended Amherst College, graduating in 1892. After graduation, he taught history and English in the Lawrenceville School in New Jersey from 1892 until 1894, and then held a graduate fellowship at Amherst University, reading philosophy and history. Johnson spent the years 1895 to 1897 studying history in Europe, with three semesters at the University of Leipzig (under Karl Gotthard Lamprecht and Erich Marcks), and one semester in Paris at the École Libre des Sciences Politiques. Johnson then finished his Ph.D. at Columbia University under James Harvey Robinson, with a dissertation entitled The Intendant as a Political Agent under Louis XIV (1899). Johnson began teaching history at Iowa College (now Grinnell College) in 1898. He left in 1905 to teach history and political science at Bowdoin College. In 1910, Johnson joined the faculty at Yale University, where he was appointed Larned Professor of American History. While on the Yale history faculty, Johnson published an article supporting the constitutionality of the fugitive slave act of 1850. An interpretation of the article is that it was part of the movement to reconcile North and South while supporting the southern side in arguments about the Constitution Less