June 20, 1867: US President Andrew Johnson announces the Alaska Purchase.
June 21, 1977: Menachem Begin becomes Israel's 6th Prime Minister.
June 22, 1941: Operation Barbarossa: Nazi Germany and its allies invade the Soviet Union during WWII, the largest military operation in history.
June 23, 1868: Christopher Latham Sholes patents the Sholes and Glidden typewriter, the first commercially successful of its kind.
June 24, 1941: Entire Jewish male population of Gorzhdy, Lithuania, exterminated.
June 25, 1951: 1st color TV broadcast, CBS' Arthur Godfrey from NYC to 4 cities.
June 26, 1963: US President John F. Kennedy gives his famous "Ich bin ein Berliner" speech in West Berlin.