** FILE ** In a file photo historian Arthur Schlesinger, left, a special adviser to President Kennedy during the disastrous invasion of the Bay of Pigs battle in Cuba in 1961, walks with Kennedy's sister Jean Kennedy Smith Wednesday March 21, 2001 at the Wayay airport in Havana, Cuba. Schlesinger, the Pulitzer Prize-winning historian and Kennedy insider who helped define mainstream liberalism during the Cold War has died, his son said Wednesday, March 1, 2006. (AP Photo/Jose Goitia)