Princess Elizabeth and President Harry S. Truman in the Canadian Embassy in Washington on Nov. 1, 1951, during a formal dinner for the Trumans. The princess and her husband, the Duke of Edinburgh, played host to the Trumans following their Canadian tour.
President Dwight D. Eisenhower was the first sitting U.S. president to host Queen Elizabeth. Here she stands with Eisenhower at the White House State banquet he held in her honor on Oct. 20, 1957, in Washington. Eisenhower is wearing the British Order of Merit awarded him by King George VI after World War II.