1796 – First elephant arrives in US from India.
1865 – Raleigh, North Carolina, captured by Union forces.
1904 – US Congress authorizes Lewis & Clark Expo $1 gold coin.
1911 – The US House of Representatives votes to institute direct elections of senators to Congress, a step forward towards direct democracy.
1920 – 1st woman US Civil Service Commissioner, Helen Hamilton appointed.
1926 – At 38, Walter Johnson pitches his 7th opening day shutout.
1934 – 4.7 million US families report receiving welfare payments.
1942 – 9th US Masters Tournament, Augusta National GC: Byron Nelson wins an 18-hole playoff by 1 stroke over runner-up Ben Hogan.
1943 – FDR dedicates Jefferson Memorial.
1949 – Philip S. Hench at Mayo Clinic announces discovery of cortisone to treat rheumatoid arthritis.
1957 – Saturday postal delivery in US is temporarily halted due to lack of funds.
1962 – Stan Musial scores his 1,869th run, a new NL record.
1966 – Pan Am places $525,000,000 order for 25 Boeing 747s.
1970 – Apollo 13 announces “Okay, Houston, we’ve had a problem here”, as Beech built oxygen tank explodes en route to Moon.
1980 – Musical “Grease” closes at Broadhurst Theater NYC after 3,388 performances.
1984 – Pete Rose becomes 1st NL player to get 4,000 hits in a career.
1997 – 61st US Masters Tournament, Augusta National GC: Tiger Woods wins his first major title, a record 12 strokes ahead of Tom Kite; 4-round total 270 (-18) is tournament record.
2004 – Barry Bonds hits his 661st career home run, passing his godfather Willie Mays on the MLB all-time list.
2006 – Powerful tornadoes rip through Iowa City, Iowa.
2019 – Gregg Popovich surpasses Lenny Wilkens to become the all-time winningest coach in NBA history with his 1,413 win as San Antonio Spurs beat Denver Nuggets, 101-96 in Western Conference Playoffs.