- 1632 Galileo’s “Dialogue Concerning the Two Chief World Systems” is published
- 1774 British House of Lords rules authors do not have perpetual copyright
- 1797 The Last Invasion of Britain by the French, begins near Fishguard, Wales
- 1825 Russia & Britain establish Alaska-Canada boundary
- 1967 25,000 US and South Vietnamese troops launch Operation Junction City against the Viet Cong. Largest US airborne assault since WWII.