1st » The Pennsylvania Turnpike, often considered the first superhighway in the United States, opens to traffic.
4th » Meeting between Adolf Hitler and Benito Mussolini at the Brenner Pass.
7th » World War II: the McCollum memo proposes bringing the United States into the war in Europe by provoking the Japanese to attack the United States.
14th » Balham tube station World War II named Balham underground station disaster in London, England, occurs during the Nazi Luftwaffe The Blitz called air raids on Great Britain.
15th » The President of Catalonia, Lluís Companys, is executed by the Spanish dictatorship of Francisco Franco, making him the only European president to have been executed.
16th » The Holocaust e.g Holocaust: The Warsaw Ghetto is established.
21st » The first edition of the Ernest Hemingway novel 'For Whom the Bell Tolls' is published.
25th » Benjamin O. Davis, Sr. is named the first African American general in the United States Army.