1682 – William Penn founds Philadelphia, US.
1864 – Battle of Petersburg: Ulysses S. Grant ends four days of assaults and begins a nine month siege.
1892 – Macadamia nuts 1st planted in Hawaii.
1898 – 1st amusement pier opens in Atlantic City, New Jersey.
1915 – 21st US Golf Open: John Travers shoots a 297 at Baltusrol GC, NJ.
1928 – American aviator Amelia Earhart becomes the 1st woman to fly across the Atlantic Ocean landing at Burry Port, Wales.
1934 – US Highway planning surveys nationwide authorized.
1941 – Joe Lewis KOs Billy Conn in 13 for heavyweight boxing title.
1949 – “Along Fifth Avenue” closes at Broadhurst Theater NYC after 180 performances.
1959 – Governor of Louisiana Earl K. Long is committed to a state mental hospital; he responds by having the hospital’s director fired and replaced with a crony who proceeds to proclaim him perfectly sane.
1961 – CBS radio cancels Gunsmoke.
1968 – Supreme Court bans racial discrimination in sale and rental of housing.
1972 – US Supreme Court, 5-3, confirms lower court rulings in Curt Flood case, upholding baseball’s exemption from antitrust laws.
1979 – US President Carter and Soviet leader Leonid Brezhnev sign SALT II treaty limiting nuclear weapons.
1983 – 7th Shuttle Mission-Challenger 2 launches Sally Ride as 1st US woman in space.
1989 – 89th US Golf Open: Curtis Strange shoots a 278 at Oak Hill CC, NY.
1996 – Ted Kaczynski, suspected of being the Unabomber, is indicted on ten criminal counts.
2003 – Google launches AdSense, a program that enables website publishers to serve ads targeted to the specific content of their individual web pages, many of which go on to start their own publishing businesses.
2016 – Soyuz capsule returns to Earth, 1st British International Space Station astronaut Tim Peake, Russian Yuri Malenchenko and American Timothy Kopra after 186 days.
2017 – 117th US Golf Open: Brooks Koepka wins his 1st major with a 16-under par 272 round at Erin Hills, Wisconsin.