1791 – 1st US law school established at University of Pennsylvania.
1791 – US Bill of Rights ratified when Virginia gives its approval, becomes amendments 1-10 of the US constitution.
1854 – 1st street cleaning machine in US used in Philadelphia.
1909 – Thomas J. Lynch becomes president of baseball’s National League.
1925 – 1st hockey game a Madison Square Garden, Montreal Canadians 3, NY Americans 1.
1933 – Baseball owners agree to ban Sunday doubleheaders until after June 15.
1935 – National Football League Championship, University of Detroit Stadium; Detroit Lions beat New York Giants, 26-7; Lions first title.
1938 – Groundbreaking begins for Jefferson Memorial in Washington, D.C.
1939 – “Gone With the Wind”, drama film directed by Victor Fleming and starring Clark Gable and Vivien Leigh, premiers in Atlanta (Best Picture 1940, inflation not adjusted highest-grossing film of all time)
1944 – Bandleader, Major Glenn Miller, lost over English Channel.
1948 – Former state department official Alger Hiss indicted in NYC for perjury.
1955 – “Folsom Prison Blues” single released by Johnny Cast (Billboard Song of the Year 1968)
1956 – WRAL TV, channel 5 in Raleigh-Durham, NC (CBS) begins broadcasting.
1965 – Gemini 6 launched; makes 1st rendezvous in space (with Gemini 7)
1973 – American Psychiatric Association declares homosexuality is not a mental illness.
1979 – Chris Haney and Scott Abbott develop the board game Trivial Pursuit.
1986 – Carnegie Hall reopens after a $50 million facelift.
1992 – Arthur Ashe is name Sports Illustrated Sportsperson of the Year.
2004 – “Million Dollar Baby”, directed by Clint Eastwood and starring Hilary Swank and Morgan Freeman is released (Best Picture 2005)
2011 – ESPN and the NCAA extend their TV rights deal through 2023-24, giving the network worldwide multi-media rights to 24 NCAA championships for various sports, deal worth $500m.
2015 – Mayor of Flint, Michigan declares state of emergency over contaminated water supplies amid calls for a criminal investigation.