April 10, 1825 - The first hotel opened in Hawaii.
April 10, 1866 - The American Society for Prevention of Cruelty to Animals (ASPCA) was incorporated.
April 10, 1925 - F. Scott Fitzgerald published "The Great Gatsby" for the first time.
April 10, 1957 - Ricky Nelson sang for first time on TV's "Adventures of Ozzie and Harriet." He performed the song "I'm Walking."
April 10, 1958 - Bobby Darin recorded "Splish Splash."
April 11, 1783 - After receiving a copy of the provisional treaty on March 13, the U.S. Congress proclaimed a formal end to hostilities with Great Britain.
April 11, 1814 - Napoleon was forced to abdicate his throne. The allied European nations had marched into Paris on March 30, 1814. He was banished to the island of Elba.
April 11, 1980 - The Equal Employment Opportunity Commission issued regulations specifically prohibiting sexual harassment of workers by supervisors.
April 11, 1981 - Edward "Eddie" Van Halen and Valerie Bertinelli were married.
April 12, 1833 - Charles Gaylor patented the fireproof safe.
April 12, 1934 - F. Scott Fitzgerald novel "Tender Is the Night" was first published.
April 12, 1954 - Bill Haley and the Comets recorded "Rock Around the Clock." The song was released a year later in the movie "Blackboard Jungle."
April 12, 1981 - The space shuttle Columbia blasted off from Cape Canaveral, FL, on its first test flight.
April 12, 1985 - USA for Africa's "We Are The World" album was released.
April 12, 1985 - Federal inspectors declared that four animals of the Ringling Brothers and Barnum & Bailey Circus were not unicorns. They were goats with horns that had been surgically implanted.
April 12, 1988 - Sonny Bono was elected Mayor of Palm Springs, CA.
April 13, 1870 - The Metropolitan Museum of Art was founded in New York City.
April 13, 1943 - U.S. President Franklin D. Roosevelt dedicated the Jefferson Memorial.
April 13, 1958 - Van Cliburn of Kilgore, TX, earned 1st prize in the Soviet Union's Tchaikovsky International Piano Contest in Moscow. He was the first American to win the award.
April 13, 1972 - The first strike in the history of major league baseball ended. Players had walked off the field 13 days earlier.
April 13, 1985 - "The Grand Ole Opry" debuted on television.
April 13, 1997 - Tiger Woods became the youngest person to win the Masters Tournament at the age of 21. He also set a record when he finished at 18 under par.
April 14, 1828 - The first edition of Noah Webster's dictionary was published under the name "American Dictionary of the English Language."
April 14, 1902 - James Cash (J.C.) Penney opened his first retail store in Kemmerer, WY. It was called the Golden Rule Store.
April 14, 1939 - The John Steinbeck novel "The Grapes of Wrath" was first published.
April 14, 1960 - The musical "Bye Bye Birdie" opened in New York City.
April 14, 1981 - America's first space shuttle, Columbia, returned to Earth after its first flight. The shuttle orbited the Earth 36 times during the mission.
April 15, 1817 - The first American school for the deaf was opened in Hartford, CT.
April 15, 1850 - The city of San Francisco was incorporated.
April 15, 1892 - The General Electric Company was organized.
April 15, 1947 - Jackie Robinson played his first major league baseball game for the Brooklyn Dodgers. Previously he had only appeared in exhibition games.
April 15, 1952 - The first B-52 prototype was flight-tested.
April 15, 1955 - Ray Kroc started the McDonald's restaurant chain.
April 16, 1862 - In the U.S., slavery was abolished by law in the District of Columbia.
April 16, 1905 - Andrew Carnegie donated $10,000,000 of personal money to set up the Carnegie Foundation for the Advancement of Teaching.
April 16, 1996 - KISS announced a reunion tour with makeup.
April 16, 1999 - Wayne Gretzky announced his retirement from the National Hockey League (NHL).