It is the 177th day of the year, with only 188 days remaining until the new year.
1541 - Francisco Pizarro is assassinated in Lima, by the son of his former companion and later antagonist, Diego Almagro. Almagro is later both caught and executed.
1718 - Tsarevich Alexei Petrovich of Russia, Peter the Great's son, mysteriously dies after being sentenced to death by his father for plotting against him.
1917 - The first U.S. troops arrive in France to fight alongside Britain and France against Germany during World War I.
1918 - At the Battle for Belleau Wood - Allied forces under John J. Pershing and James Harbord defeat Imperial German Forces under Wilhelm, German Crown Prince.
1927 - The famous Cyclone roller coaster opens on Coney Island.
1936 - It is the initial flight of the Focke-Wulf Fw 61, the first practical helicopter.
1942 - It is the first flight of the American Grumman F6F Hellcat.
1960 - Madagascar gains its independence from France.
1974 - The Universal Product Code is scanned for the first time to sell a package of Wrigley's chewing gum at the Marsh Supermarket in Troy, Ohio.