1721 – Robert Walpole becomes Britain’s 1st Lord of the Treasury – effective Prime Minister, although that term was never officially used (indeed, it was considered an insult) until much later
1913 – British suffragette Emmeline Pankhurst sentenced to 3 years in jail
1926 – Second flight of a liquid-fueled rocket by Robert Goddard
1949 – KQW-AM in San Francisco CA changes call letters to KCBS
1955 – Baltimore Orioles pull their 1st triple play (3-6-2 vs KC Athletics)
1962 – American jockey Eddie Arcaro retires after 31 years (24,092 races)
1966 – Soviet Luna 10 completes its first orbit of the Moon
1978 – Larry King moves his radio show from Miami to Washington, D.C.
1982 – 136th Grand National: 48 year old Dick Saunders wins aboard 7/1 favourite Grittar; oldest jockey to win the event
2012 – US President Barack Obama officially secures Democratic presidential nomination