Harry Andrew Blackmun was the ninety-ninth justice appointed to the U.S. Supreme Court. He was appointed by President Richard M. Nixon and sat on the Court from 1970 until 1994. Raised in Saint Paul, Minnesota, Blackmun attended Harvard University on partial scholarship, graduating with a degree in mathematics. After graduating from Harvard Law School, he returned to Minnesota, where he clerked for Judge John Benjamin Sanborn of the Eight Circuit Court of Appeals. He later worked for the firm of Driscoll, Fletcher, Dorsey, and Barker in Minneapolis, practicing tax law and becoming a junior partner in 1939. In 1950 he accepted the position of resident counsel at the Mayo Clinic in Rochester, Minnesota, and in 1959 he was appointed to the Eighth Circuit Court of Appeals.