The one that every schoolchild learns about began in 1804, when Thomas Jefferson sent Meriwether Lewis ... which enable the creation of maps in three dimensions. Lewis and Clark traveled for ...

Biography.com looks at U.S. explorers Meriwether Lewis and William Clark and how their passion for horses inspired a ...

May 20 [Cpt. Meriwether Lewis] The morning was fair, and the weather pleasent; at 10 oCk A M....I was joined by Capt. Stoddard...and many other respectable inhabitants of St. Louis, who had ...

July 4, 1804—To mark our first Fourth west of the Mississippi, Lewis directed me to powder the keelboat's cannon so he could fire it. I would have liked to shoot it too, but that's OK.