1802 – 1st leopard exhibited in US, Boston (admission 25 cents)
1848 – Treaty of Guadalupe Hidalgo ends the Mexican-American War: US acquires Texas, California, New Mexico and Arizona for $15 million.
1869 – James Oliver invents removable tempered steel plow blade.
1887 – In Punxsutawney, Pennsylvania, the first Groundhog Day is observed.
1901 – Female Army Nurse Corps established as a permanent organization.
1901 – The US Congress passes the Army Reorganization Act, placing the minimum number of men under arms at 58,000.
1912 – Frederick R. Law, parachutes from Statute of Liberty (stunt for Pathe)
1913 – NY Football Giants sign Jim Thorpe.
1923 – Ethyl gasoline 1st marketed, Dayton, Ohio.
1942 – US auto factories switch from commercial to war production.
1954 – President Eisenhower reports detonation of 1st H-bomb (done in 1952)
1964 – GI Joe, debuts as a popular American boy’s toy.
1975 – US female Figure Skating championship won by Dorothy Hamill.
1976 – “Honeymooners Second Honeymoon” airs on TV.
1977 – Radio Shack officially begins creating TRS-80 computer.
1980 – FBI releases details of Abscam, a sting operation that targeted 31 elected & public officials for bribes for political purposes.
1989 – 0 F (-18 C) or below in 15 US states.
1991 – US postage is raised from 25 cents to 29 cents.
1993 – Frito Lay pays court ordered $2,500,000 to Tom Wait for using his song.
1995 – US space shuttle Discovery launched.
2016 – First case of Zika contracted on US mainland (Texas) and second known sexually transmitted case confirmed in Texas.