April 2, 1872 - G.B. Brayton received a patent for the gas-powered streetcar.
April 3, 1910 - Alaska's Mt. McKinley, the highest mountain in North America was climbed.
April 4, 1541 - Ignatius of Loyola became the first superior-general of the Jesuits.
April 5, 1806 - Isaac Quintard patented the cider mill
April 6, 1896 - The first modern Olympic Games began in Athens, Greece.
April 7, 1798 - The territory of Mississippi was organized.
April 8, 1946 - The League of Nations assembled in Geneva for the last time.
April 9, 1831 - Robert Jenkins lost an ear. The event started a war between Britain and Spain.
April 10, 1790 - The U.S. patent system was established.
April 11, 1985 - Scientists in Hawaii measured the distance between the earth and moon within one inch.
April 12, 1606 - England adopted the original Union Jack as its flag.
April 13, 1963 - Pete Rose of the Cincinnati Reds got his first hit in the major leagues.
April 14, 1860 - The first Pony Express rider arrived in San Francisco with mail originating in St. Joseph, MO
April 15, 1850 - The city of San Francisco was incorporated.
April 16, 1940 - The first no-hit, no-run game to be thrown on an opening day of the major league baseball season was earned by Bob Feller. The Cleveland Indians beat the Chicago White Sox 1-0.
April 17, 1964 - The Ford Motor Company unveiled its new Mustang model
April 18, 1949 - The Republic of Ireland was established.
April 19, 1775 - The American Revolution began as fighting broke out at Lexington, MA.
April 20, 1998 - Kenyan runner Moses Tanui, 32, won the Boston Marathon for the second time. He also registered the third fast time with 2 hours 7 minutes and 34 seconds.
April 21, 753 BC - Today is the traditional date of the foundation of Rome.
April 22, 1876 - Eight baseball teams began the inaugural season of the National League.
April 23, 1900 - The word "hillbilly" was first used in print in an article in the "New York Journal." It was spelled "Hill-Billie".
April 24, 1833 - A patent was granted for first soda fountain.
April 25, 1684 - A patent was granted for the thimble.
April 26, 1954 - Grace Kelly was on the cover of "LIFE" magazine.
April 27, 1880 - Francis Clarke and M.G. Foster patented the electrical hearing aid
April 28, 1999 - Tom Petty & The Heartbreakers received a star on the Hollywood Walk of Fame.
April 29, 1993 - An animated Barry White was a guest on "The Simpsons."
April 30, 1987 - The Beatles' "Help!", "Rubber Soul" and "Revolver" were released on compact disc