Benjamin Rush was among those who founded the first American antislavery society.
Noah Webster copyrighted the first edition of his dictionary.
The first pony express rider reached his destination of San Francisco. He left St. Joseph, Mo., on April 3.
Titanic hit the iceberg that would sink her the next morning.
In a record breaking night at the Academy Awards, a tie between Katherine Hepburn and Barbra Streisand resulted in the two sharing the the Best Actress Oscar and Hepburn broke the record as the only actress to win three Best Actress Oscars.
An explosion in the Eyjafjallajokull volcano in Iceland results in a volcanic ash plume in the atmosphere over northern and central Europe. Air travel in the region is halted for several days.