What Happened On This Day – February 23
1954 The first mass inoculation against polio is conducted
Virologist Jonas Salk's vaccine is still one of the two versions used today, along with Hilary Koprowski's live polio vaccine.
1947 The International Organization for Standardization (ISO) begins operating
The ISO issues standards for everything from bicycle tires to date formats.
1941 Glenn T. Seaborg and his team chemically identify Plutonium
The radioactive element plays an important role as nuclear fuel or in nuclear weapons.
1917 The February Revolution begins in Russia
The demonstrations and armed clashes ultimately resulted in the demise of the Russian Empire.
1455 The Gutenberg Bible is published
Johannes Gutenberg's Bible edition was the first book ever printed in movable type, heralding the age of the printed book in the West.
Births On This Day – February 23
1929 Alexy II of Moscow
1899 Erich Kästner
German author, poet
1868 W. E. B. Du Bois
American sociologist, historian, activist
1685 George Frideric Handel
Deaths On This Day – February 23
1965 Stan Laurel
English actor, comedian
1934 Edward Elgar
1855 Carl Friedrich Gauss
1848 John Quincy Adams
American politician, 6th President of the United States
1821 John Keats