February 14, 1806

Mapping unknown lands

The captains worry about the men at the Salt Works in present Seaside, Oregon, and Clark finishes a map of their route. On it, he includes “the most practicable and navigable passage” over the Rockies.

 

September 12, 1805

Intolerable road

Moving up the Northern Nez Perce Trail, the “intolerable road” clings to steep hillsides above Lolo Creek in present Montana. The travelers camp at a small site without grass for their horses.

 

September 11, 1805

The Northern Nez Perce Trail

After looking for stray horses, the expedition heads up the Indian trail that follows Lolo Creek. They come across a painted tree and stay at a site where the ponderosa bark has been stripped for food.

 

September 10, 1805

The travelers rest

From Travelers’ Rest, hunters disperse in many directions. Pvt. Colter brings three Indians to camp, and the captains learn about the Northern Nez Perce Trail that will take them to the Clearwater River.

 

November 7, 1803

Cave-in-Rock hideaway

On or near this date, the expedition passes Cave-in-Rock—a hangout for the notorious Mason Gang. After a recent escape, the Mississippi Territorial Governor offers a $1,000 reward for their return.

 

October 21, 1803

Louisville viewscape

Lewis and Clark prepare for departure from the Falls of the Ohio. Other travelers describe the area’s geography including Clarksville, the home site of Revolutionary War hero George Rogers Clark.

 

September 16, 1803

Very bad riffles

After delaying for fog, Lewis pushes his crew until nearly dark. They pass an area with trees marked by both Indians and settlers. At camp near present Ravenswood, West Virginia, the crew is exhausted.

 

August 13, 1803

Pittsburgh's "salubrious" air

As he waits in Pittsburgh for the military barge to be completed, Lewis leaves little record of his day-to-day activities. Here, Pittsburgh’s air quality is described by other visitors.

 

August 7, 1803

Fort Duquesne

As he waits in Pittsburgh for the barge to be completed, Lewis leaves little record of his activities. Early travelers François André Michaux and Thaddeus Harris describe the ruins of Fort Duquesne.

 

May 30, 1803

Portable soup

In Philadelphia, Israel Whelan buys 193 pounds of “portable soup”. While crossing the Bitterroot Mountains of Idaho, the travelers relied on the soup for emergency rations and later still, as medicine.

 

May 13, 1803

Louisiana Treaty completed

In Paris, France, Robert Livingston and James Monroe record the details of the Louisiana Purchase for James Madison. Also in Paris, B. G. É. L. Lacepède provides information about the Columbia River.