Abe Lincoln did not split rails in Tampa, and George Washington's cherry tree might not have been cut in Miami-Dade, but in Key West, the famous Harry S. Truman sign--"The Buck Stops Here"--still resides on the former president's Florida White House desk. A few hours north is the Kennedy bunker, complete with the presidential seal painted on the concrete floor just in case the Soviets started a nuclear war while Kennedy was vacationing in Palm Beach...