http://www.history.com/this-day-in-history/theodore-roosevelt-makes-grand-canyon-a-national-monument

http://www.history.com/this-day-in-history/gusher-signals-start-of-u-s-oil-industry

http://www.history.com/this-day-in-history/columbus-mistakes-manatees-for-mermaids

http://www.history.com/this-day-in-history/crazy-horse-fights-last-battle

http://www.history.com/this-day-in-history/first-u-s-presidential-election

http://www.history.com/this-day-in-history/morse-demonstrates-telegraph

http://www.history.com/this-day-in-history/golden-gate-bridge-is-born

http://www.history.com/this-day-in-history/the-euro-debuts

http://www.history.com/this-day-in-history/noriega-surrenders-to-u-s

http://www.history.com/this-day-in-history/u-s-russia-detente-ends