On June 23 in …
1314 — In the First War of Scottish Independence, the Battle of Bannockburn is fought near Stirling Castle, with Scottish forces defeating the English.
1683 — Founder William Penn signs a friendship treaty with the Lenni Lenape (a/k/a/ Delaware tribe of Indians) in the Pennsylvania colony.
1912 — Alan Turing is born in London. The English mathematician and computer scientist became a leading member of the Bletchley Park team of cryptographers that cracked the Germans’ Enigma coding machine, a turning point in World War II.
1926 — The College Entrance Examination Board conducts the first Scholastic Aptitude Test (SAT).
2013 -– Nik Wallenda becomes the first man to successfully walk across the Grand Canyon on a tight rope.