Arthur M. Schlesinger Jr. (1917-2007), known today as the architect of John F. Kennedy's presidential legacy, blazed an extraordinary path from Harvard University to wartime London to the West Wing. The son of a pioneering historian--and a two-time Pulitzer Prize and National Book Award winner in his own right--Schlesinger redefined the art of presidential biography. A Thousand Days, his best-selling and immensely influential record of the Kennedy...