On this day with Lewis & Clark

January 17, 1804

River thick with ice

At Wood River, the thermometer drops below zero and the Missouri runs with ice. In Washington City, the Spanish Minister proposes that the Americans leave the west side of the Mississippi to the Indians.

January 17, 1805

Windy and cold

With the thermometer dropping to -12°F, there is little activity at Fort Mandan and only a few Knife River villagers visit. In Spain, King Charles IV authorizes the arrest of Lewis and his expedition.

January 17, 1806

Hats, mats, and baskets

At Fort Clatsop near present Astoria, Oregon, Lewis describes Chinookan eating utensils, woven baskets, and hats. A Clatsop man refuses to trade his otter skin robe for anything other than blue beads.

Featured Trail Segments

Two army officers at Harpers Ferry ponder an iron frame in the shape of a large canoe

Eastern Beginnings

10 January–30 August 1803

The Lewis and Clark Expedition ostensibly began in February 1801 when President Thomas Jefferson wrote a letter to Army commander General James Wilkinson requesting that Lieutenant Meriwether Lewis become the President’s personal secretary. Exploration of North America’s western half had long been a goal of the president, and now he had a young protégé who might lead such an expedition.

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Day-by-Day Pages In-depth Articles


The red pirogue is loaded on a snowy day at Wood River

Winter at Wood River

12 December 1803–13 May 1804

In mid-December 1803, construction of winter quarters begins. In accordance with the wishes of the Spanish Governor, Lewis could work in St. Louis and the soldiers could build a garrison in Illinois across from the mouth of the Missouri. The Wood river cantonment is known today as Camp River Dubois.

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Fort Mandan surrounded by snow and ice

Winter at Fort Mandan

26 October 1804–6 April 1805

On 2 November 1804 below the Knife River Villages, work begins on the expedition’s winter fortification. The men’s quarters, storage rooms, and the 16-foot pickets, are designed for defense against hostile Indians, especially the Sioux, who would be quite troublesome, although they never attacked the fort directly. “This place we have named Fort Mandan,” Lewis recorded, “in honour of our Neighbours”—their kind and congenial Mandan Indians. Here they celebrate their second Christmas and New Year’s Day.

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Day-by-Day Pages In-depth Articles


Fort Clatsop under construction

Winter at Fort Clatsop

7 December 1805–22 March 1806

The expedition leaves Tongue Point on 7 December 1805, and immediately upon their arrival at a small point of land above the Netul River, begin to construct winter quarters. They would name it Fort Clatsop in honor of their neighbors.

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Day-by-Day Pages In-depth Articles

Featured Artist George Catlin

Historic painting of a earthen lodges on the river bank

“Arikara Village of Earth-Covered Lodges”

Indians on snowshoes spear and shoot arrows at a passing buffalo herd

“Buffalo hunt. On snow shoes.”

Three men holding sticks similar to lacrosse

“Ball Players”

George Catlin (1796–1872) gives us one of the most accurate views of Native American lifeways as seen by the members of the Lewis and Clark Expedition when they traveled on the Missouri River in 1805 and 1806. His curiosity sparked by Lewis and Clark artifacts displayed at Peale’s Museum in Philadelphia, Catlin began painting Native Americans with a trip up the Mississippi with General William Clark in 1830. He expanded his travels creating over 500 paintings. He also wrote a series of ‘letters’ of his travels, providing an early ethnographic record of many Native nations and tribes: Letters and Notes on the Manners, Customs, and Condition of the North American Indians, Volumes 1 and 2.

Bio and Index

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    Medicine on the Trail

    From major crisis such as the death of Sgt. Floyd, Lewis’s gunshot wound, and the illness of Sacagawea to minor events such as sexually transmitted diseases, mosquito-born illnesses, and deep cuts, the medical aspects of the Lewis and Clark Expedition provide an interesting topic of study.

     

    The Arts

    Because of the literate journalists, historians and visual artists can tell the Expedition’s story. When they celebrated with song and dance, we too can share in the experience.

     

    The Trail

    Starting with its genesis in Jefferson’s Monticello, Lewis’s training and preparations in Philadelphia, and the barge’s excursion down the Ohio River, the route they took, often called the Lewis and Clark Trail, crosses the continent weaving an epic tale of western exploration treasured by many today.

     

    The Fur Trade

    Given President Jefferson’s directive to establish commerce, the captains worked extensively within a long-established network of North American fur trade. Part of their mission was to help establish the United States of America’s position within that industry.

     

    Native American Nations

    The Lewis and Clark Expedition benefited from the Indians’ knowledge and support. Maps, route information, food, horses, open-handed friendship—all gave the Corps of Discovery the edge that spelled the difference between success and failure.

     

    Horse Travel

    To cross the Rocky Mountains, the Lewis and Clark Expedition needed horses and the skills to manage them. Despite their seemingly constant struggle to find missing and stolen horses, as a kind of calvary unit, they left hoof prints on approximately 1,500 miles of western terrain.

     

    The Boats

    Starting at Pittsburgh, traveling to the Pacific Ocean, and then returning to St. Louis, the Lewis and Clark Expedition traveled approximately 10,600 miles. Of that, 85%—over 9,000 miles—was by boat. To understand travel in the early 1800 American West is to understand the boats and challenges of river navigation.

     

    Calendar

    Expedition Calendar

    Links to every day-by-day page in a calendar format spanning 31 August 1803 to 26 September 1806. A page every day!

     

    People

    The success of the Lewis and Clark Expedition was due to its many members and the people they met, including politicians, Eastern gentleman scientists, traders, and the many people already living in the American west.

     

    Louisiana’s Purchase

    The President’s representatives in Paris had bargained successfully with Napoleon’s bureaucrats not only to buy the port of New Orleans, then the keystone of the continent, but also to acquire, at three cents an acre, an area extending from the Mississippi River to . . . where? No one knew until Meriwether Lewis stood at the crest of the Rocky Mountains at a place known today as Lemhi Pass, on 12 August 1805.

     

    Hunting and Fishing

    Although hunting and fishing were often considered a ‘gentleman’s sport’ especially in Europe, hunting and fishing for Native Americans and Americans alike were a matter of survival. The success of the Lewis and Clark Expedition depended on the success of its hunters.

     

    Legacies

    Legacy is a very slippery sort of term. If we could erase our myth concepts of Lewis and Clark … it might reawaken something really extraordinary in our national consciousness.

     

Experience the Lewis and Clark Trail

The Lewis and Clark Trail Experience—our sister site at lewisandclark.travel—connects the world to people and places on the Lewis and Clark Trail.

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Discover More

  • The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
  • The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
  • The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.