Births on June 25

Doreen Wells, English ballerina and actress

Doreen Patricia Vane-Tempest-Stewart, Marchioness of Londonderry (née Wells; born 25 June 1937) is a British former ballet dancer.

23 Jan

Leon Trotsky
The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
21 Feb

Spanish Civil War
The League of Nations bans foreign national "volunteers" in the Spanish Civil War.
12 May

United Kingdom of Great Britain and Northern Ireland
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 in Westminster Abbey.
27 May

Golden Gate Bridge
In California, the Golden Gate Bridge opens to pedestrian traffic, creating a vital link between San Francisco and Marin County, California.
22 Jul

Judicial Procedures Reform Bill of 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.