Igor Sikorsky First Successful Single-Rotor Helicopter Flight, May 24, 1940

Adolf Hitler goes on a three-hour tour of the architecture of Paris with architect Albert Speer and sculptor Arno Breker in his only visit to the city. Date: June 23, 1940 Read more on Wikipedia → 📅 Other events on June 23 📅 Events on this day in 1940 📅 On This Day (Today) More…

Martin Kamen and Sam Ruben discover carbon-14. Date: February 27, 1940 Read more on Wikipedia → 📅 Other events on February 27 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Franz Rademacher Proposes Madagascar Jewish Homeland Plan June 3, 1940Soviet Occupation of Estonia, Latvia, and Lithuania, June 17,…

World War II: During the Battle of France, the Luftwaffe bombs Paris. Date: June 3, 1940 Read more on Wikipedia → 📅 Other events on June 3 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Winter War Ends with Moscow Peace Treaty, March 13, 1940Le Paradis Massacre: 99…

Pennsylvania Central Airlines Trip 19 crashes near Lovettsville, Virginia. The CAB investigation of the accident is the first investigation to be conducted under the Bureau of Air Commerce act of 1938. Date: August 31, 1940 Read more on Wikipedia → 📅 Other events on August 31 📅 Events on this day in 1940 📅 On…

The Holocaust: In occupied Poland, the Nazis close off the Warsaw Ghetto from the outside world. Date: November 16, 1940 Read more on Wikipedia → 📅 Other events on November 16 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940First Prisoners Arrive at Auschwitz Concentration Camp, May 20,…

Igor Sikorsky performs the first successful single-rotor helicopter flight. Date: May 24, 1940 Read more on Wikipedia → 📅 Other events on May 24 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940RMS Lancastria Sunk by Luftwaffe Near Saint-Nazaire, 1940 June 17, 1940Italian Troops Conquer Sidi Barrani -…