Opening of SIPEX
On May 21, 1966, the Sixth International Philatelic Exhibition opened in Washington, DC.
On May 21, 1966, the Sixth International Philatelic Exhibition opened in Washington, DC.
On May 18, 1863, the key Siege of Vicksburg Began.
On May 17, 1954, the US Supreme Court ordered the desegregation of schools as a result of the case of Brown vs. Board of Education.
Nurse and social reformer Florence Nightingale was born on May 12, 1820, in Florence, Tuscany, Italy.
On May 3, 1861, General-in-Chief Winfield Scott presented a plan to end the Civil War without a great loss of life – it was later dubbed the “Anaconda Plan.”
On April 29, 1947, the US issued its first aerogram, then called an air letter sheet.
On April 25, 1988, the Soviet-Canadian Polar Bridge Expedition reached the North Pole.
On April 20, 1918, the Red Baron shot down his 80th plane, a record for World War I.
Renaissance Man Leonardo da Vinci was born on April 15, 1452, in Vinci, Republic of Florence, Italy.