1877 – Billy the Kid kills his first man
http://www.history.com/this-day-in-history/billy-the-kid-kills-his-first-man
1943 – Robert De Niro born
http://www.history.com/this-day-in-history/robert-de-niro-born
1969 – Woodstock Music Festival concludes
http://www.history.com/this-day-in-history/woodstock-music-festival-concludes
1978 – Balloon crosses the Atlantic
http://www.history.com/this-day-in-history/balloon-crosses-the-atlantic
1999 – Earthquake exposes weak infrastructure
http://www.history.com/this-day-in-history/earthquake-exposes-weak-infrastructure