Harry MACKENZIE

(b. 31 May 1904 , New York, USA d. 20 March 1950 , Manhattan, New York, USA )

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Harry MACKENZIE was born 31 May 1904 in New York, USA

Harry MACKENZIE was the child of Henry MACKENZIE and Lillian Mabel POSEY and the grandchild of: (maternal) Frank Bennett POSEY and Ella Cecilia SMITH

Harry MACKENZIE died 20 March 1950 in Manhattan, New York, USA .
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Discovering the Ancestry of Harry MACKENZIE: Events, Photos & Historical Records

1904 Birth
31 May 1904
New York, USA

1906 - August 22 – The first Victor Victrola, a phonographic record player, was manufactured, revolutionizing the way people listened to music at home.

In 1906, Reginald Fessenden made the first AM radio broadcast on December 24th. This event marked a significant advancement in radio technology, paving the way for the modern broadcasting industry.

1907-1908 - The electric washing machine is invented (Alva J. Fisher, United States)

1908 - First Model-T car is produced by Henry Ford (United States)

1909 - William Howard Taft becomes President of the United States

1912 - April 15 - Titanic sinks in the North Atlantic

1913 - The assembly line is invented (Henry Ford, United States)

The bra is invented (Mary Phelps Jacob, United States)

1913 - Woodrow Wilson becomes President of the United States

1913 - October 31 – The Lincoln Highway, the first automobile road across the United States, is dedicated

1915 - January 25 - First United States coast-to-coast long-distance telephone call

1917 - March 2 – The enactment of the Jones Act grants Puerto Ricans United States citizenship.

1917 - April 6 – WWI: The United States declares war on Germany

1918 - March 19 – The United States Congress establishes time zones and approves daylight saving time

1919 - June 4 – Women's rights: The United States Congress approves the 19th Amendment to the United States Constitution, which would guarantee suffrage to women, and sends it to the U.S. states for ratification

1920 - January 17 - Prohibition goes into effect on January 17, 1920, under the provisions of the 18th Amendment to the United States Constitution

1921 - Warren G. Harding becomes President of the United States

1921 - Charles Strite of Minnesota patents the pop-up toaster.

1923 to 1927 - Television is invented (Vladimir Kosma Zworykin (Russia), Philo Taylor Farnsworth (United States))

1923 - Calvin Coolidge becomes President of the United States

1927 - The aerosol can is invented (Erik Rotheim, Norway)

1927 - April 7 – Bell Telephone Co. transmits an image of Herbert Hoover (then the Secretary of Commerce), which becomes the first successful long distance demonstration of television

1928 - Sliced bread (bread slicing machine) is invented by Otto Frederick Rohwedder (United States)

1929 - Herbert Hoover becomes President of the United States

1929 - October 29 - Black Tuesday - Stock market crash - The Great Depression Begins - It lasted until 1941 (WW2)

1930 - Scotch tape is invented (Richard Drew (3M), United States)

In 1930, on February 18, Pluto was discovered by astronomer Clyde Tombaugh at the Lowell Observatory in Flagstaff, Arizona, marking a significant milestone in the study of our solar system.

1931 - The paper towel is invented (Arthur Scott, United States)

1931 - March 3 – The Star-Spangled Banner is adopted as the United States National anthem.

1933 - Franklin D. Roosevelt becomes President of the United States

1933 - December 5 – The 21st Amendment to the United States Constitution is passed, repealing Prohibition

1934 - The metal beverage can is invented (American Can Co., United States)

1935 - The snowmobile was invented by Joseph Bombardier (Quebec, Canada)

1935 - August 14 – United States President Franklin Roosevelt signs the Social Security Act into law

1938 - The ballpoint pen is invented (Lazlo Biro, Hungary)

1938-1944 - Sunscreen is invented (Franz Greiter, Switzerland and Benjamin Green, United States)

1938 - October 27 - Du Pont announces a name for its new synthetic yarn: nylon.

1940 - April - 1st electron microscope demonstrated (RCA), Philadelphia, Pennsylvania, USA

1941 - December 8 - (the day after the Japanese attacked Pearl Harbor) United States declares war on Japan (WW2)

1944 - D-Day, which occurred on June 6, 1944, was a pivotal World War II operation where Allied forces launched a massive invasion on the beaches of Normandy, France. Known as Operation Overlord, it involved over 156,000 troops from the United States, United Kingdom, Canada, and other Allied nations. The operation aimed to liberate Western Europe from Nazi German control. The landings marked the beginning of the end for Nazi Germany, leading to the eventual Allied victory in Europe.

1945 - The atomic bomb is invented (J. Robert Oppenheimer, et al., United States)

The microwave oven was invented accidentally in 1945 by Percy Spencer, a Raytheon engineer. While testing a magnetron, he noticed microwaves melted a candy bar in his pocket. Experimenting further, he discovered microwaves could cook food quickly. Raytheon patented the process, and by 1947, they built the first commercial microwave oven, called the 'Radarange.' Initially used in commercial settings, microwaves becomes affordable for home use by the 1960s and 1970s, revolutionizing cooking.

1945 - Harry S. Truman becomes President of the United States

1945 - On September 2, 1945, World War II officially ended with the formal surrender of Japan. The surrender ceremony took place aboard the USS Missouri in Tokyo Bay, where Japanese officials signed the Instrument of Surrender in the presence of Allied representatives, including General Douglas MacArthur and Admiral Chester Nimitz.

1948 - Velcro is invented (George de Mestral, Switzerland)