Truman Signing Air Mail Bill
President Harry S. Truman (seated, left) signs the 5-cent Air Mail Bill at his desk in the Oval Office. Postmaster General Robert E. Hannegan is seated at right. Standing (l-r): Congressman George D. O'Brien; John Hart of United Airlines; Senator Dennis Chavez; Senator Carl Hayden; Congressman Charles E. McKenzie; Congressman John C. Butler; and Frank J. Delany of the Post Office Department.