A Map of Lewis and Clark's Track, Across the Western Portion of North America From the Mississippi to the Pacific Ocean;
By Order of the Executive of the United States, in 1804, 5 & 6. Copied by Samuel Lewis from the Original Drawing of Wm. Clark. Smal. Harrison fct.

May 14, 1804 - Lewis and Clark Expedition to the Pacific coast

At 4:00 pm, the Corps of Discovery, led by Meriwether Lewis and William Clark,
departs from Camp Dubois (near Hartford, Illinois).