2nd » Amelia Earhart and navigator Fred Noonan are last heard from over the Pacific Ocean while attempting to make the first equatorial round-the-world flight.
5th » Spam (food) e.g Spam, the luncheon meat, is introduced into the market by the Hormel or Hormel Foods Corporation.
6th » Spanish Civil War: Battle of Brunete: The battle begins with Spanish Republican troops going on the offensive against the Nationalists to relieve pressure on Madrid.
7th » Second Sino-Japanese War: Marco Polo Bridge Incident known as Battle of Lugou Bridge Japanese forces invade Beijing, China.
8th » Turkey, Iran, Iraq and Afghanistan sign the Treaty of Saadabad.
24th » Alabama drops rape charges against the so-called "Scottsboro Boys".
26th » End of the Battle of Brunete in the Spanish Civil War.
29th » Tungchow Mutiny known as Tōngzhōu Incident: In Tongzhou District, Beijing named Tōngzhōu, China, the East Hopei Army attacks Japanese troops and civilians.