A president is shot, a Supreme Court justice is born, aliens land -- or not -- and an acting legend passes, all on this day in history.
1679: Europeans first visit Minnesota and see the headwaters of the Mississippi River in an expedition led by Daniel Greysolon de Du Luth.
CNN Exclusive/Richard Dessin
Boy Scouts of America
Library of Congress
Auction Team Breker
Chuck Kennedy/The White House
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