Historic Event
Sep 3 US President Woodrow Wilson signs Adamson Act, providing an 8-hour day on interstate railroads, preventing a national railroad strike
- Sep 4 Future Baseball Hall of Fame pitchers Christy Mathewson & Mordecai Brown face each other for a final time; after 25 contests Mathewson takes a 13-12 advantage with Reds 10-8 winners over Cubs
US Men's Tennis Open
Sep 5 US National Championship Men's Tennis: R. Norris Williams beats Bill Johnston 4-6, 6-4, 0-6, 6-2, 6-4 for his 2nd and final US singles crown
Film Release
Sep 5 "Intolerance", silent film directed by D. W. Griffith, starring Vera Lewis and Ralph Lewis, is released
First Supermarket
Sep 6 1st true supermarket, the "Piggly Wiggly" is opened by Clarence Saunders in Memphis, Tennessee
- Sep 7 Giants beat Brooklyn 4-1, to launch NY's record 26-game winning streak
- Sep 7 Workmen's Compensation Act passed by Congress
- Sep 8 US President Woodrow Wilson signs the Emergency Revenue Act, doubling the rate of income tax and adding inheritance and munitions profits tax
- Sep 11 German troops conquer Kavalla Greece
- Sep 11 The Quebec Bridge's central span collapses during reconstruction, killing 11 men
- Sep 14 Christy Mathewson pitches & wins his final game
1st Use of Tanks in War
Sep 15 First use of tanks in warfare, "Little Willies" at Battle of Flers-Courcelette, part of the Battle of the Somme
- Sep 17 40,000 Amsterdam demonstrators demand general voting right
Historic Event
Sep 17 WWI flying ace The Red Baron of the German Luftstreitkräfte, wins his first aerial combat near Cambrai, France
- Sep 19 First landing at Schiphol Airport, Netherlands (Farman F-22 of Soesterberg)
- Sep 19 Belgian troops conquer Tabora, German East Africa
- Sep 24 Indians' Marty Kavanaugh, hits AL's 1st pinch-hit grand slam
- Sep 26 Bishop speak against Catholics in trade unions
- Sep 27 1st Native American Day celebrated, honoring American Indians
- Sep 27 Emperor Lidj Jasu of Ethiopia flees a palace coup by his aunt Zauditu
Historic Event
Sep 29 American oil tycoon John D. Rockefeller becomes the world's first billionaire
- Sep 30 Giants lose to Braves 8-3, ends 26 consecutive win streak
Historic Event
Sep 30 Eleftherios Venizelos announces he is forming a Provisional Government in Crete as an alternative to the one in Athens; he is determined to bring Greece into the war on the side of the Allies
