WHAT ALL HAPPENED APRIL TO AUGUST 1937
Find out what all happened April to August 1937

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

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

Aden becomes a British crown colony. (1. April 1937)

Spam, the luncheon meat, is introduced into the market by the Hormel Foods Corporation. (5. July 1937)

U.S. House of Representatives passes the Marihuana Tax Act. (14. June 1937)

Spanish Civil War: Jaén, Spain is bombed by Nazi forces. (1. April 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 California, the Golden Gate Bridge opens to pedestrian traffic, creating a vital link between San Francisco and Marin County, California. (27. May 1937)

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

New Deal: the United States Senate votes down President Franklin D. Roosevelt's proposal to add more justices to the Supreme Court of the United States. (22. July 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)

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

In the Spanish Civil War, Sovereign Council of Asturias and León is proclaimed in Gijón. (24. August 1937)

Hindenburg disaster: The German zeppelin Hindenburg catches fire and is destroyed within a minute while attempting to dock at Lakehurst, New Jersey. Thirty-six people are killed. (6. May 1937)

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

Josip Broz Tito reads the resolution "Manifesto of constitutional congress of KPH" to the constitutive congress of KPH (Croatian Communist Party) in woods near Samobor. (1. August 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)

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

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