Before he went exploring, he was Thomas Jefferson's private secretary
[DOC] [TLE] Explorers for Kids: Lewis and Clark - Ducksters [PAR] August 1, 1770 in Ladysmith, Virginia (Clark); Died: October 11, 1809 in ... Lewis 
and Clark were asked by President Thomas Jefferson to explore and map the ... 
Captain Meriwether Lewis (1774 - 1809) was President Thomas Jefferson's 
private secretary.