Arthur Schlesinger, Jr. (1917–2007) was an American historian and social critic whose work explored the American liberalism of political leaders including Franklin D. Roosevelt, John F. Kennedy, and Robert F. Kennedy. Schlesinger served as special assistant to President Kennedy from 1961 to 1963. He wrote a detailed account of the Kennedy administration, from the transition period to the president’s state funeral, titled A Thousand Days, for which he won the Pulitzer Prize. The author of more than nineteen books, he won a second Pulitzer in 1946 for his book The Age of Jackson.