From left to right, President Harry S. Truman, Secretary of State Dean Acheson, and Chief Justice Fred Vinson at Acheson's swearing-in ceremony in the Oval Office. Standing in the background, from left to right, are: unidentified woman, unidentified man, Mrs. Alice Acheson, unidentified woman, Congressman Sol Bloom, Senator Arthur Vandenberg, Senator Tom Connally, Major General Harry Vaughan (partly obscured by Vinson), Captain Robert Dennison, and Mary Jane Truman.