On this day, April 30 ...

1789: George Washington is inaugurated as the first president of the United States.

Also on this day:

1798: The U.S Department of the Navy forms.

The U.S Department of the Navy forms. 1803: Chancellor Robert Livingston and James Monroe sign the Louisiana Purchase Treaty in Paris at a cost of $15 million.

Chancellor Robert Livingston and James Monroe sign the Louisiana Purchase Treaty in Paris at a cost of $15 million. 1859: Charles Dickens' "A Tale Of Two Cities" is first published, in the literary periodical "All the Year Round."

Charles Dickens' "A Tale Of Two Cities" is first published, in the literary periodical "All the Year Round." 1864: New York becomes the first state to charge a hunting license fee.

New York becomes the first state to charge a hunting license fee. 1885: The Boston Pops Orchestra forms.

The Boston Pops Orchestra forms. 1897: English physicist J. J. Thomson announces his discovery of the electron in a lecture to the Royal Institution.

English physicist J. J. Thomson announces his discovery of the electron in a lecture to the Royal Institution. 1900: The "Hawaiian Organic Act" is enacted by Congress, making Hawaii a U.S. territory.

The "Hawaiian Organic Act" is enacted by Congress, making Hawaii a U.S. territory. 1903: In the New York Highlanders' (Yankees) first home game, they beat the Washington Senators, 6-2.

In the New York Highlanders' (Yankees) first home game, they beat the Washington Senators, 6-2. 1904: The ice cream cone makes its debut.

The ice cream cone makes its debut. 1939: The New York World's Fair opens.

1939: Lou Gehrig sets an MLB record, playing his 2,130th consecutive and final game for the New York Yankees.

1945: Adolf Hitler commits suicide along with his new wife Eva Braun in the Fuhrerbunker in Berlin as the Red Army captures the city.

Adolf Hitler commits suicide along with his new wife Eva Braun in the Fuhrerbunker in Berlin as the Red Army captures the city. 1947: Boulder Dam is renamed in honor of Herbert Hoover.

Boulder Dam is renamed in honor of Herbert Hoover. 1952: Mr. Potato Head is the first toy advertised on television.

Mr. Potato Head is the first toy advertised on television. 1972: "Arthur Godfrey Time" ends a 27-year run on radio.

"Arthur Godfrey Time" ends a 27-year run on radio. 1974: President Richard Nixon hands over partial transcripts of Watergate tape recordings.

President Richard Nixon hands over partial transcripts of Watergate tape recordings. 1989: The World Wide Web (WWW) is first launched in the public domain by European Organization for Nuclear Research (CERN) scientist Tim Berners-Lee.

The World Wide Web (WWW) is first launched in the public domain by European Organization for Nuclear Research (CERN) scientist Tim Berners-Lee. 1992: The 208th and final episode of "The Cosby Show" airs on NBC.

The 208th and final episode of "The Cosby Show" airs on NBC. 1996: President Bill Clinton approves the sale of $227 million of crude oil from the Strategic Petroleum Reserve.