1664 – English colonizing Connecticut.
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 1st used in Philadelphia.
1877 – Thomas Edison patents the phonograph.
1933 – Baseball owners agree to ban Sunday doubleheaders until after June 15.
1938 – Groundbreaking begins for Jefferson Memorial in Washington, DC.
1939 – “Gone With the Wind” premieres in Atlanta.
1939 – 1st commercial manufacture of nylon yarn, Seaford, Delaware.
1950 – NYC’s Port Authority opens.
1952 – Christine Jorgenson is 1st person to undergo a sex-change operation.
1956 – WRAL TV channel 5 in Raleigh-Durham, NC (CBS) begins broadcasting.
1961 – Equal access rule, political parties get TV broadcasting time.
1976 – Oil tanker Argo Merchant runs aground on the Nantucket Shoals, spilling 7.6 million gallons of fuel oil – one of the largest oil spills at sea.
1986 – Carnegie Hall reopens after a $50 million facelift.
1993 – John Williams final appearance as conductor of Boston Pops.
2004 – “Million Dollar Baby”, directed by Clint Eastwood and starring Hilary Swank and Morgan Freeman is released (Best Picture of 2005).
2006 – B.B. King is awarded the Presidential Medal of Freedom by President George W. Bush.
2009 – Boeing’s new 787 Dreamliner makes its maiden flight from Seattle, Washington.
2015 – Mayor of Flint, Michigan declares state of emergency over contaminated water supplies amid calls for a criminal investigation.