September 05, 1946
By virtue of the authority vested in me as President of the United States and as Commander in Chief of the Army and Navy, I hereby order that East Executive Avenue in the District of Columbia be reopened to public travel on and after September 9, 1946
Harry S Truman, Executive Order 9776—Reopening East Executive Avenue to Public Travel Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/231017