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Charles Darwin publishes his theory of evolution, the NFL is founded, Lou Gehrig belts his 23rd career grand slam and NASA heads for Mars, all on this day.
1775: The Spanish establish the Presidio San Augustin del Tucson in the town that will become Tucson, Ariz.
Library of Congress
"Mary Had a Little Lamb" is first published, the Brooklyn Bridge opens, Major League Baseball gets lit up, Bob Dylan is born, and "Thelma & Louise" and "Braveheart" premiere in theaters, all on this day.