1673: Joliet & Marquette begin exploring the Mississippi; expedition is marred by pair's constant bickering over whether the river is "Big" or "Muddy."
1804: Lewis & Clark begin exploration of the Louisiana Purchase; more than a little surprised to discover that Jefferson bought it sight-unseen and hope he kept the receipt.
1845: Rubber band patented; well, you didn't think it invented itself, did ya?
1846: Saxophone is patented, neighbors’ objections go unheard.
1932: Congress changes the name "Porto Rico" to "Puerto Rico" but does not stipulate any change of pronunciation.
1960: First atomic reactor system is patented by JW Flora, of Canoga Park, CA; he built it in his garage from stuff he got at an Army Surplus store and parts from three old Philco radios.
1961: Fidel Castro offers to exchange Bay of Pigs prisoners for 500 bulldozers; "The pretty yellow ones," he specifies.