In this Jan. 20, 1953 black-and-white file photo, President Harry Truman, left, and his successor, President-elect Dwight D. Eisenhower, leave the White House in Washington in an open car for inauguration ceremonies. Sitting in the front is Sen. Styles Bridges of New Hampshire. (AP Photo, File)

In this Jan. 20, 1953 black-and-white file photo, President Harry Truman, left, and his successor, President-elect Dwight D. Eisenhower, leave the White House in Washington in an open car for inauguration ceremonies. Sitting in the front is Sen. Styles Bridges of New Hampshire. (AP Photo, File)

* * FILE ** U.S. President Harry Truman waves with his cane as he leaves the White House in Washington in this July 3, 1947, file photo on his way to Charlottesville, Va., for an Independence Day address at Monticello. The Associated Press is asking 2008 presidential candidates a series of questions about their personal tastes, habits and backgrounds. When asked to name to name their favorite 20th century president from the opposing party, Republican presidential candidates Rudy Giuliani, Mike Huckabee, John McCain, and Mitt Romney all chose Harry Truman. (AP Photo/File)