"Imagine the summer of 1905. At the races at Auteuil (near Paris) a woman appeared wearing trousers in public for the first time. Her name is unknown, but this is a picture of her. Police men had to protect her against the curiosity and outrage of the crowd. The incident dominated the newspapers for days on end."
Midnight Train to Georgia | 1942 A group of African American women waiting for their trains at the Pennsylvania railroad station, New York City, 1942. Sepia tone (original b). by Black History Album, via Flickr
Enigma Machine - Enigma Machine During World War II, the Germans used the Enigma, a cipher machine, to develop nearly unbreakable codes for sending messages. The Enigma's settings offered 150,000,000,000,000,000,000 possible solutions, yet the Allies were eventually able to crack its code. By end of the war, 10 percent of all German Enigma communications were decoded at Bletchley Park, in England, on the world’s first electromagnetic computers.