 Stone began the oath "Do you, Harry SHIPP Truman...", mistakingly thinking that the President's mother's maiden name, and it wasn't even that, was his middle one.It wasn't, and Truman replied, "I Harry ESS Truman..." He never used a period in his signature.Among witnesses of this ceremony were Truman's wife Bess Truman, daughter Margaret Truman, Mrs. Roosevelt, Speaker Rayburn, and members of the cabinet.