Dean Acheson (left) being sworn in as Secretary of State by Supreme Court Chief Justice Fred Vinson (right). Standing behind his desk in the Oval Office is President Harry S. Truman. In the background from left to right are: Mrs. Alice Acheson, unidentified woman, Congressman Sol Bloom, Senator Arthur Vandenberg, Senator Tom Connally, Major General Harry Vaughan, Captain Robert Dennison, Mary Jane Truman, and an unidentified woman.