Dillon, John Forrest, 1831–1914, American jurist, b. Montgomery co., N.Y., M.D. State Univ. of Iowa, 1850. He abandoned medical practice early in his career and was admitted to the Iowa bar in 1852. Dillon was an Iowa state judge (1858–68) and a U.S. circuit judge (1869–79). During his judicial career he wrote Municipal Corporations (1872), one of the earliest systematic studies on this subject, and Removal of Cases from State Courts to Federal Courts (1876). He was (1879–82) a professor in the Columbia Law School, and president of the American Bar Association from 1891 to 1892.