1800 – Spain cedes Louisiana to France in a secret treaty
1847 – German inventor and industrialist Werner von Siemens founds Siemens AG and Halske
1922 – St. Louis Cardinals second baseman Rogers Hornsby goes 3-for-5 in a 7-1 regular season-ending win against the Chicago Cubs, improving his batting average to .401; he is the only MLB player to bat .400 and hit 40 home runs in the same season
1939 – After a one-month Siege of Warsaw, hostile forces enter the city
1946 – Cleveland Indians pitcher Bob Feller claims his MLB record 348th strikeout of the season in a 4-1 win over Detroit; the record stands for 19 years
1950 – US Open Women’s Golf, Rolling Hills CC: Babe Zaharias ties Open scoring record, -9 291, to beat amateur Betsy Rawls by 9 strokes
1953 – KYTV TV channel 3 in Springfield, MO (NBC) begins broadcasting
2023 – Ryder Cup Golf, Marco Simone GandCC, Rome, Italy: Europe dominates the United States 16½-11½ to regain the title; Tyrrell Hatton, Jon Rahm, and Robert MacIntyre unbeaten for Europe