1906 – First freight delivery system begins beneath Chicago.
1911 – Procter & Gamble unveils its Crisco shortening.
1914 – Panama Canal opens, under cost, with the SS Ancon making the first official steamship through the canal.
1923 – Mexico and the United States reach accord over oil concession of 1917.
1936 – Marshall Wayne and Elbert Root make it an American 1-2 finish in the 10-meter platform diving at the Berlin Olympics.
1939 – “The Wizard of Oz,” an American musical fantasy film adaption of L. Frank Baum’s book, premieres at Grauman’s Chinese Theatre in Hollywood. It’s directed by Victor Fleming and King Vidor with cast featuring Judy Garland (Dorothy), Ray Bolger (Scarecrow), Jack Haley (Tin Man), Bert Lahr (Cowardly Lion), Frank Morgan (Wizard), Billie Burke (Glinda), and Margaret Hamilton (Wicked Witch) with songs by Harold Arien and Yip Harburg.
1945 – Wartime rationing of gasoline and fuel oil ends in the United States.
1952 – 19th NFL Chicago All-Star Game: Los Angeles 10, All-Stars 7 in front of 88,316 spectators.
1955 – Hurricane Connie dissipates after killing 77 people along the eastern seaboard and mid Atlantic states.
1964 – American long jumper Ralph Boston set the then-world record of 27 feet, 3½ inches in Kingston, Jamaica.
1971 – President Richard Nixon announces a 90-day freeze on wages, prices and rents.
1975 – Joanne Little acquitted of murdering her prison guard in North Carolina. She is the first woman to successfully use defense of deadly force to resist rape.
1986 – President Ronald Reagan decides to support a replacement for Space Shuttle Challenger.
1988 – New York City begins a $70 million program to rebuild 900 apartments in the Bronx.
1990 – Mark McGwire is the first to hit 30 home runs in each of his first four seasons in Major League Baseball.
1997 – Dow Jones Industrial Average drops 247.37 points.
2008 – An American 1-2 finish in the 200-meter backstroke at the Beijing Olympics with Ryan Lochte swimming a world record 1:53.94 to beat teammate Aaron Peirsol.
2017 – Barack Obama’s tweet “No one is born hating another person because of the color of his skin or his background or his religion…” in response to the violence in Charlottesville, Virginia. It becomes the most-liked tweet ever.
2018 – President Donald Trump revokes security clearance of former CIA Director and Trump critic John Brennan.
2019 – Disney Studios is the first studio to have five films over $1 billion each in one year with “Toy Story 4,” “Avengers: Endgame,” “Captain Marvel,” “Aladdin” and “The Lion King.”