WHAT ALL HAPPENED MAY TO OCTOBER 1937
Find out what all happened May to October 1937

A Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean. (21. May 1937)

The Duke and Duchess of York are crowned as King George VI and Queen Elizabeth of the United Kingdom of Great Britain and Northern Ireland at a ceremony in Westminster Abbey. (12. May 1937)

The world's first emergency telephone number, 999, is introduced in London (30. June 1937)

The Battle of Shanghai begins. (13. August 1937)

Chinese Air Force Day: The beginning of air-to-air combat of the Second Sino-Japanese War and World War II in general, when 6 Imperial Japanese Mitsubishi G3M bombers are shot down by the Nationalist Chinese Air Force while raiding Chinese air bases. (14. August 1937)

J. R. R. Tolkien's The Hobbit is published. (21. September 1937)

Tōngzhōu Incident: in Tōngzhōu, China, the East Hopei Army attacks Japanese troops and civilians. (29. July 1937)

Memorial Day massacre: Chicago police shoot and kill 10 labor demonstrators. (30. May 1937)

Balinese Tiger declared extinct. (27. September 1937)

Nine nations attend the Nyon Conference to address international piracy in the Mediterranean Sea. (10. September 1937)

Spanish Civil War: The German Condor Legion, equipped with Heinkel He 51 biplanes, arrives in Spain to assist Francisco Franco's forces. (7. May 1937)

The Duke of Windsor marries Wallis Simpson. (3. June 1937)

Great Purge: The Soviet Union under Joseph Stalin executes eight army leaders. (11. June 1937)

The Marihuana Tax Act of 1937 is passed in America, the effect of which is to render marijuana and all its by-products illegal. (2. August 1937)

In the Spanish Civil War, the Basque Army surrenders to the Italian Corpo Truppe Volontarie following the Santoña Agreement. (24. August 1937)

Spanish Civil War: The start of the Battle of El Mazuco. (6. September 1937)

Toyota Motors becomes an independent company. (28. August 1937)

Turkey, Iran, Iraq and Afghanistan sign the Treaty of Saadabad. (8. July 1937)

Second Sino-Japanese War: Battle of Lugou Bridge – Japanese forces invade Beijing, China. (7. July 1937)

End of the Battle of Brunete in the Spanish Civil War. (26. July 1937)