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, launched by the French during the Revolutionary Wars, 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.