Robber John Dillinger stole $10,000 in his first robbery at a bank in New Carlisle, Ohio.
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President Franklin Roosevelt became the first president to travel abroad during war.
The Great Arab Revolt against the Ottoman Empire led by Lawrence of Arabia was initiated in Mecca.
Italy declared war on France and Britain.
NASA's Explorer 49 was launched into Earth's orbit to research long-range radio waves within the Milky Way.
The US signed the Equal Pay Act to reduce the difference in pay between sexes.
