May 31, 1955 - The U.S. Supreme Court ordered that all states must end racial segregation "with all deliberate speed."

May 30, 1922 - The Lincoln Memorial was dedicated in Washington, DC.

May 29, 1790 - Rhode Island became the last of the original thirteen colonies to ratify the U.S. Constitution.

May 28, 1928 - Chrysler Corporation merged with Dodge Brothers, Inc.

May 27, 1937 - The Golden Gate Bridge was opened to the public.

May 26, 1969 - The Apollo 10 astronauts returned to Earth after a successful eight-day dress rehearsal for the first manned moon landing.

May 26, 1967 - "Sgt. Pepper’s Lonely Hearts Club Band," by The Beatles, was released.

May 25, 1787 - The Constitutional convention opened at Philadelphia with George Washington presiding.

May 24, 1830 - The first passenger railroad service in the U.S. began service.

May 23, 1785 - Benjamin Franklin wrote in a letter that he had invented bifocals.

May 22, 1761 - In Philadelphia, the first life insurance policy was issued in the U.S.

May 21, 1881 - The United States Lawn Tennis Association was formed in New York City.

May 20, 1830 - The fountain pen was patented by H.D. Hyde.

May 19, 1857 - The electric fire alarm system was patented by William F. Channing and Moses G. Farmer.

May 18, 1652 - A law was passed in Rhode Island which was the first to make slavery illegal in North America.

May 17, 1792 - The New York Stock Exchange was founded at 70 Wall Street by 24 brokers.

May 16, 1866 - The U.S. Congress authorized the first 5-cent piece to be minted.

May 15, 1926 - The New York Rangers were awarded a franchise by the National Hockey League (NHL).

May 14, 1787 - Delegates began gathering in Philadelphia for a convention to draw up the U.S. Constitution.

May 12, 1847 - William Clayton invented the odometer.

May 11, 1910 - Glacier National Park in Montana was established.

May 10, 1773 - The English Parliament passed the Tea Act, which taxed all tea in the U.S. colonies.

May 9, 1961 - Jim Gentile (Baltimore Orioles) set a major-league baseball record by hitting grand slam home runs in two consecutive innings.

May 8, 1794 - The United States Post Office was established.

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May 7, 1847 - The AMA (American Medical Association) was organized in Philadelphia, PA.

May 6, 1915 - Babe Ruth hit his first major league home run while playing for the Boston Red Sox.

May 5, 1986 - It was announced that Cleveland, Ohio, had been chosen as the city where the Rock & Roll Hall of Fame would be built.

May 4, 1976 - KISS performed their first concert in their hometown of New York City.

May 3, 1921 - West Virginia imposed the first state sales tax.

May 2, 1974 - The filming of "Jaws" began in Martha's Vineyard, MA.

May 1, 1486 - Christopher Columbus convinced Queen Isabella to fund an expedition to the West Indies.