Apr. 30, 1964 - The FCC ruled that all TV receivers should be equipped to receive both VHF and UHF channels.

Apr. 29, 1990 - The destruction of the Berlin Wall began.

Apr. 29, 1961 - ABC’s "Wide World of Sports" premiered.

Apr. 28, 1686 - The first volume of Isaac Newton's "Principia Mathamatic" was published.

Apr. 27, 1773 - British Parliament passed the Tea Act.

Apr. 25, 1859 - Work began on the Suez Canal in Egypt.

Apr. 24, 1981 - The IBM Personal Computer was introduced.

Apr. 23, 1789 - U.S. President George Washington moved into Franklin House, New York. It was the first executive mansion.

Apr. 22, 1955 - The U.S. Congress ordered all U.S. coins to bear the motto "In God We Trust."

Apr. 21, 1987 - Special occasion stamps were offered for the first time by the U.S. Postal Service. ("Happy Birthday" and "Get Well")

Apr. 20, 1964 - The Elvis Presley movie "Viva Las Vegas" premiered.

Apr. 20, 1935 - "Your Hit Parade" was first broadcast on radio. It aired for 24 years.

Apr. 19, 1982 - NASA named Sally Ride to be first woman astronaut.

Apr. 18, 1934 - The first Laundromat opened. It was in Fort Worth, TX.

Apr. 17, 1875 - The game "snooker" was invented by Sir Neville Chamberlain.

Apr. 16, 1862 - In the U.S., slavery was abolished by law in the District of Columbia.

Apr. 15, 1955 - Ray Kroc started the McDonald's restaurant chain.

Apr. 14, 1828 - The first edition of Noah Webster's dictionary was published under the name "American Dictionary of the English Language."

Apr. 14, 1981 - America's first space shuttle, Columbia, returned to Earth after its first flight.

Apr. 13, 1943 - U.S. President Franklin D. Roosevelt dedicated the Jefferson Memorial.

Apr. 13, 1985 - "The Grand Ole Opry" debuted on television.

Apr. 12, 1833 - Charles Gaylor patented the fireproof safe.

Apr. 11, 1783 - The U.S. Congress proclaimed a formal end to hostilities with Great Britain.

Apr. 10, 1790 - The U.S. patent system was established.

Apr. 7, 1949 - The musical "South Pacific" by Rogers and Hammerstein debuted on Broadway.

Apr. 6, 1789 - The first U.S. Congress began regular sessions at the Federal Hall in New York City.

Apr. 5, 1843 - Queen Victoria proclaimed Hong Kong to be a British crown colony.

Apr. 4, 1960 - Elvis Presley recorded "Are You Lonesome Tonight."

Apr. 3, 1953 - "TV Guide" was published for the first time.

Apr. 2, 1956 - "The Edge of Night" and "As the World Turns" debuted on CBS-TV.

Apr. 1, 1748 - The ruins of Pompeii were found.