Roaring  Twenties  Era
- 1920: Good Humor® chocolate-dipped ice cream bar on a stick invented by Harry Burt at the Burt Confectionery in Youngstown, Ohio.
- 1920: Swift & Company introduced E.K Pond commercial peanut butter; later adopted hydrogenation technology to become the first emulsified peanut butter sold to the public; changed name to Peter Pan Peanut Butter in 1928.
- 1920 Jan 2: Birthday of author Isaac Asimov; he died in 1992.
- 1920 Jan 16: 18th Amendment prohibiting production & sale of alcoholic beverages declared to be in effect, starting the Prohibition Era.
- 1920 Feb 1: Creation of the Royal Canadian Mounted Police, by merging the Dominion Police and the Royal North West Mounted Police.
- 1920 Feb 14: Founding of the League of Women Voters.
- 1920 April 15: Two employees were killed and nearly $16,000 in payroll money taken at the Slater & Morrill Shoe Factory in South Braintree, Massachusetts; the killers escaped in a car with several other men; anarchists Sacco & Vanzetti were executed for the crime in 1927.
- 1920 May 19: Striking miners and local police defended the town of Matewan, West Virginia against hoodlums hired by mine owners; the gunfight resulted in 12 deaths, including the mayor.
- 1920 Aug 26: 19th Amendment guaranteeing women the vote was declared to be in effect.
- 1920 Aug 29: Birthday of jazzman Charlie 'Bird' Parker; he died in 1955.
- 1920 Sept 17: Founding of the American Professional Football Assn. (a precursor of the National Football League) in Canton, Ohio.
- 1920 Oct 22: Birthday of counterculture icon Timothy Leary, PhD; he died in 1996.
- 1921
- Eskimo Pie™ chocolate-dipped ice cream bar went on the market, produced by Russell Stover Candies®.
- Character 'Betty Crocker' created to respond to cooking & baking questions received from a Gold Medal flour advertisement in Saturday Evening Post Magazine.
- Launch of the Baby Ruth® candy bar.
- 1921 May 3: West Virginia imposed the first state sales tax.
- 1921 May 21: Taggart Baking Company of Indianapolis, Indiana introduced Wonder® bread.
- 1921 July 14: A jury found Italian anarchists Bartolomeo Vanzetti and Nicola Sacco guilty in the Braintree robbery & killings; the two Italian anarchists were executed for the crime in 1927.
- 1921 Aug 25: U.S. signed a peace treaty with Germany.
- 1921 Oct 5: First broadcast of baseball's World Series on radio.
- 1921 Nov 11: President Harding dedicated the Tomb of The Unknown Soldier at Arlington National Cemetery in Washington, DC.
- 1922: Chemist Joseph Rosefield added hydrogenated vegetable oil to stabilize peanut butter; the process was licensed to Swift & Company in 1923, becoming the Peter Pan® brand in 1928; Rosefield began marketing the new product as Skippy® Peanut Butter in 1933.
- 1922 Jan 24: Patent for Eskimo Pie™ chocolate-dipped ice cream bar issued to Christian K. Nelson of Onawa, Iowa and Russell Stover of Chicago, Illinois.
- 1922 March 12: Birthday of Beat writer Jack Kerouac in Lowell, MA; he died in 1969.
- 1922 April 14: The Wall Street Journal broke the news story about oil leases that led to Senate investigations and criminal trials known as the 'Teapot Dome Scandal'.
- 1922 May 30: Dedication of the Lincoln Memorial in Washington, DC by Chief Justice William Howard Taft.
- 1922 Sept: Clarence Birdseye founded Birdseye Seafoods, Inc. in New York City to process flash-frozen fish fillets.
- 1922 Nov 11: Birthday of author Kurt Vonnegut, Jr.; he died in 2007.
- 1923: Russell Stover Candies® went on the market.
- 1923 Feb 14: Velveeta Cheese Company incorporated in Monroe, New York; sold to Kraft in 1927.
- 1923 March 2: Launch of Time Magazine by Henry R. Luce.
- 1923 May 2-3: First nonstop flight across America took 26 hours and 50 minutes.
- 1923 Sept 17: Birthday of singer / songwriter Hank Williams; he died in 1953.
Timelines of History 1924-25
- 1924
- Pyrex® cookware went on the market.
- First U.S. execution using hydrocyanic gas, of a Chinese tong member at the Nevada State Prison in Carson City.
- Painted roadway center lines law passed by California legislature after a long campaign by Dr. June McCarroll of Indio, California.
- Whole wheat flakes ready-to-eat breakfast cereal accidentally invented by a health clinician in Minneapolis; process perfected by George Cormack, head miller at Washburn Crosby Co.; eventually marketed as Wheaties®.
- 1924 Feb 8: First coast-to-coast radio broadcast.
- 1924 Feb 22: Calvin Coolidge delivered the first radio broadcast from the White House.
- 1924 May 10: J. Edgar Hoover appointed Director of the F.B.I.
- 1924 June 2: Congress granted U.S. citizenship to all American Indians.
- 1924 Aug 2: Birthday of author James Baldwin; he died in 1987.
- 1924 Aug 5: Harold Gray's comic strip Little Orphan Annie began in the New York Times.
- 1924 Sept 28: Two U.S. Army aeroplanes landed in Seattle, Washington to complete the first round-the-world flight, which took 175 days.
- 1924 Nov: Launch of Wheaties® Whole Wheat Flakes ready-to-eat breakfast cereal.
- 1924 Nov 25: Macy's Department Store held its first Thanksgiving Parade in New York City.
- 1925: Beginning of the Goodyear blimp program.
- 1925 Feb 21: Birthday of film director Sam Peckinpah; he died in 1984.
- 1925 Mar 13: Tennessee law made teaching of evolution there unlawful.
- 1925 May 19: Birthday of activist Malcolm X; he died in 1965.
- 1925 May 27: Birthday of mystery author Tony Hillerman; he died in 2008.
- 1925 June 6: Founding of the Chrysler Corporation by Walter Percy Chrysler.
- 1925 July 10: Scopes 'Monkey Trial' began in Dayton, Tennessee.
- 1925 July 21: John T. Scopes convicted, fined $100; conviction overturned on appeal.
- 1925 Nov 28: The 'Grand Ole Opry' radio program made its debut on Nashville's WSM.
Timelines of History 1926-27
- 1926
- Frederic J. Fisher [1878-1941] and his brother Charles [1880-1963] sold their Fisher Body Company to General Motors.
- Montgomery Ward opened its first store in Plymouth, Indiana.
- The first spring-driven, pop-up toaster was introduced by Toastmaster.
- Erik Rotheim of Norway invented the aerosol can.
- 1926 Feb 8: Birthday of Beatnik author Neal Cassady; he died in 1968.
- 1926 Mar 6: Birthday of economist Alan Greenspan in New York City; he served as Chairman of the Federal Reserve from 1987 to 2006.
- 1926 March 16: Dr. Robert H. Goddard successfully launched the first liquid-fueled rocket near Auburn, Massachusetts.
- 1926 April 3: Dr. Goddard launched his second flight of a liquid-fueled rocket.
- 1926 April 9: Birthday of publisher-hedonist Hugh M. Hefner in Chicago.
- 1926 April 28: Birthday of Harper Lee, author of the Pulitzer-winning "To Kill A Mocking- bird" [1960].
- 1926 May 18: Evangelist Aimee Semple McPherson vanished while visiting a beach in Venice, California; she reappeared a month later, claiming to have been kidnapped.
- 1926 May 25: Birthday of American jazz trumpeter Miles Davis in Alton, Illinois.
- 1926 June 1: Birthday of actress Marilyn Monroe {nee Norma Jean Mortenson, later Norma Jean Baker} in Los Angeles; she died in 1962.
- 1926 June 3: Birthday of Beat poet Allen Ginsberg in Newark, New Jersey; he died in 1997.
- 1926 July 2: Congress established the U.S. Army Air Corps.
- 1926 July 14: Archeologist Frank Figgins found a spear point embedded into the matrix of rock containing 10,000 year-old bones of ancient bison in eastern New Mexico, establishing the existence of what came to be called the Folsom Tradition.
- 1926 Aug 6: Warner Bros. premiered "Don Juan" in New York City, the first film using the Vitaphone sound-on-disc system (featuring music & sound effects).
- 1926 Aug 23: The death of silent film actor Rudolph Valentino caused a worldwide frenzy among his fans.
- 1926 Sept: The severe hurricane that devastated Miami, Florida was the final blow that burst the Florida land bubble and led to the economic Great Depression of 1929.
"The Great American Land Bubble: The Amazing Story of Land-Grabbing,
Speculations & Booms From Colonial Days To The Present Time" [1932 classic] by Aaron M. Sakolski
Harper & Brothers hardcover [1932] out of print/scarce
- 1926 Sept 9: The Radio Corporation of America created N.B.C., the National Broadcasting Company,
- 1926 Sept 23: Birthday of influential jazz saxophonist John Coltrane in Hamlet, North Carolina; he died in 1967.
- 1926 Oct 15: Birthday of American writer Evan Hunter {nee Salvatore Lombino} in New York City; he also wrote as Ed McBain; he died in 2005.
- 1926 Nov 15: The National Broadcasting Company debuted with a radio network of 24 stations.
- 1927: Edwin E. Perkins invented Kool-Aid® in Hastings, Nebraska; celebrated at the town's
'Kool-Aid Days' in August.
- 1927 Jan 29: Birthday of eco-activist / author Edward Abbey; he died in 1989.
- 1927 April 9: After lengthy appeals, Italian anarchists Bartolomeo Vanzetti and Nicola Sacco were sentenced to death by Judge Thayer.
- 1927 May 4: Founding of the Academy of Motion Picture Arts & Sciences.
- 1927 May 19-20: Aviator Charles Lindbergh made the first successful solo flight across the Atlantic Ocean, traveling nonstop from Roosevelt Field in Long Island, New York to Paris, France in 33.5 hours.
- 1927 August 23: Executions of unjustly-convicted Italian anarchists Bartolomeo Vanzetti and Nicola Sacco, along with bankrobber Celestino Madeieros.
- 1927 Sept 7: Invention of all-electronic television by Philo T. Farnsworth [1906-71] in San Francisco, California.
- 1927 Sept 18: Debut of the Columbia Phonograph Broadcasting System [later C.B.S.] with a network of 16 radio stations.
- 1927 Oct 6: Talking pictures arrived with the opening of "The Jazz Singer", starring Al Jolson; the movie featured both silent & synchronous-sound scenes.
- 1927 Dec 2: Ford Motor Company unveiled the 'Model A' automobile, successor to the Model T.
- 1928
- Jolly Green Giant® brand placed on the market.
- William Dreyer partnered with candy-maker Joseph Edy to found a small ice cream factory in Oakland, California.
- Launch of Reese's Peanut Butter Cups.
- 1928 March 12: Release of "The Treasurer's Report", a hilarious short starring Robert Benchley, which is actually the first ALL-sound movie in general release.
- 1928 June 17-18: Amelia Earhart becomes the first woman to fly across the Atlantic.
- 1928 June 20: Founding of General Mills, Inc. by merger of 5 companies.
- 1928 Nov 18: The first successful synchronous sound animated cartoon premiered in New York City - Walt Disney's "Steamboat Willie", starring Mickey Mouse.
- 1929 Jan 15: Birthday of civil rights leader Rev. Martin Luther King, Jr. in Atlanta, GA; he died in 1968.
- 1929 Jan 17: Popeye the Sailor appeared in the first dialy "Thimble Theater" comic strip.
- 1929 Feb 14: Chicago's Al Capone machine-gunned to death seven rivals in the 'St. Valentine's Day Massacre'.
- 1929 Feb 26: President Coolidge signed legislation establishing Grand Teton National Park.
- 1929 May 16: First Academy Awards banquet.
- 1929 Oct 24: Beginning of the stock market crash – referred to since as 'Black Thursday'.
- 1929 Oct 28: Stock market crashes! #3 worst one-day Dow-Jones Industrial Average decline of 12.82%, closing at 260.64.
- 1929 Oct 29: Stock market crashes! #4 worst one-day Dow-Jones Industrial Average decline of 11.73%, closing at 230.07; the infamous 'Black Tuesday' collapse of the New York stock market began America's 'Great Depression'.
- 1929 Nov 6: Stock market crashes! #5 worst one-day Dow-Jones Industrial Average decline of 9.92%.
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