- Rare photo of Lincoln at Gettysburg (archives.gov)
In 1952, the chief of the Still Photo section at the National Archives, Josephine Cobb, discovered a glass plate negative taken by Mathew Brady of the speaker’s stand at Gettysburg on the day of its dedication as a National Cemetery. Edward Everett would speak from that stand later in the afternoon for two straight hours. Moments later, a tall, gaunt Abraham Lincoln would stand up and deliver a ten sentence speech in two minutes. It was the Gettysburg Address.
- Isaac Newton (Wikipedia)
Sir Isaac Newton PRS (25 December 1642 – 20 March 1726/27) was an English mathematician, physicist, astronomer, alchemist, theologian, and author (described in his time as a “natural philosopher”), widely recognised as one of the greatest mathematicians and physicists and among the most influential scientists of all time. He was a key figure in the philosophical revolution known as the Enlightenment. His book Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687, established classical mechanics. Newton also made seminal contributions to optics, and shares credit with German mathematician Gottfried Wilhelm Leibniz for developing infinitesimal calculus.