1819 – 1st successful agricultural journal (“American Journal”) first publishes.
1927 – US inventor Joseph Dixon of Salem, Massachusetts, begins manufacturing lead pencils.
1866 – US President Andrew Johnson ends civil war in Alabama, Arkansas, Florida, Georgia, Mississippi, Louisiana, North Carolina, South Carolina, Tennessee & Virginia.
1877 – 1st Easter egg roll held on White House lawn.
1912 – Titanic undergoes sea trials under its own power.
1917 – Jeannette Rankin (Rep-R-Montana) begins her term as 1st woman member of US House of Representatives.
1921 – Albert Einstein lectures in New York City on his new “Theory of Relativity”
1932 – Charles Lindbergh turns over $50,000 as ransom for his kidnapped son.
1942 – USS Hornet with Jimmy Doolittles B-25 departs from San Francisco.
1945 – 1st US units reach east coast of Okinawa.
1958 – Wind speed reaches a record 450 kph in tornado, Wichita Falls, Texas.
1968 – Senator Eugene McCarthy wins Democratic primary in Wisconsin.
1978 – Velcro was 1st put on the market.
1986 – George C Wallace (Gov-D-Ala) announces retirement plans.
1989 – WrestleMania V at Trump Plaza, Hulk Hogan beats “Macho Man” Savage.
1992 – Mafia boss John Gotti is found guilty of 5 murders (Paul Castellano, Thomas Bilotti, Robert DiBernardo, Liborio Milito and Louis Dibono), plus conspiracy to murder, loansharking, illegal gambling, obstruction of justice, bribary and tax evasion.
1995 – Sunday NY Times raises price from $2.00 to $2.50.
1996 – Detroit Tigers slugger Cecil Fielder steals 1st base in 1,097th career game.
2006 – Over 60 tornadoes break out, hardest hit is Tennessee with 29 people killed.
2018 – NCAA Division I Men’s Basketball Tournament championship game: Villanova defeats Michigan 79-62 in San Antonia, Texas.