1835 – P.T. Barnum & his circus begin 1st tour of US.
1857 – James Gibbs of Virginia, patents the chain-stitch single-thread sewing machine.
1875 – Alexander Graham Bell makes first sound transmission.
1913 – 1st strike settlement mediated by US Department of Labor – railroad clerks.
1919 – Pulitzer Prize awarded to Carl Sandburg (Cornhuskers)
1924 – President Calvin Coolidge signs the Indian Citizenship Act, declaring all Native Americans to be American citizens.
1928 – Kraft, building on the original 1918 design, rolls out Velveeta cheese.
1930 – Sarah Dickson becomes 1st woman Presbyterian elder in US, Cincinnati.
1952 – 650,000 metal workers go on strike in US.
1952 – Maurice Olley of General Motors begins designing the Corvette.
1975 – VP Rockefeller finds no pattern of illegal activities at CIA.
1977 – New Jersey allows casino gambling in Atlantic City.
1979 – Los Angeles Mayor Tom Bradley signs first homosexual rights bill.
1985 – RJ Reynolds Company proposes a merger with Nabisco.
1987 – Seattle Mariners draft Ken Griffey Jr. #1.
1991 – Three Andrettis finish 1-2-3 in the Miller 200 race at Wisconsin.
1994 – Sharon Stone files $12m lawsuit against her jeweler.
1997 – Timothy McVeigh found guilty of 1995 Oklahoma City bombing, killing 168.
2004 – Ken Jennings begins his 74-game winning streak on the syndicated game show Jeopardy!
2015 – US Congress passes new legislation to reform National Security Agency procedures, restricting gathering of phone records.