Expedition Members
Learn about the people—and one dog—who were members of the Lewis and Clark Expedition.
On this day with Lewis & Clark
June 24, 1803
Expected timeline
In Washington City, Thomas Jefferson tells Benjamin Rush that the Western Expedition will leave Fort Kaskaskia the first of September. In Dover, Delaware, Thomas Rodney accepts two Federal appointments.
June 24, 1804
An aggressive snake
Drouillard hangs a deer over the river for the boats to retrieve, and Clark watches a snake go after it. Clark shoots a bear, the boats catch up to the two hunters, and they camp near present Missouri City.
June 24, 1805
Sailing on dry land
Severe weather passes over everybody, and a sail is employed as they portage two more dugout canoes around the Great Falls of the Missouri. Below the falls, the last canoe is taken out of the water.
June 24, 1806
Back to the mountains
The expedition leaves Weippe Prairie with three Nez Perce guides who intone fair weather by burning trees. Sgt. Gass has moved forward to invite the two Nez Perce men on met 21 Jun 1806 to join them.
Featured Trail Segments
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.
On 18 January 1803, Lewis hand-delivers to the U.S. Congress the President’s request to fund what would become known as the Lewis and Clark Expedition. The President works in Washington City and Monticello to craft instructions and line up the best talent to assist Lewis. In France, three diplomats negotiate with Napoleon Bonaparte to purchase the Louisiana Territory.
Meriwether receives training, supplies and equipment in Philadelphia and avails himself of armaments and specialized equipment—including a collapsable iron-framed boat—at the Schuylkill and Harpers Ferry arsenals. By July 1803, everything is at Fort Fayette in Pittsburgh. All Lewis needs is a large boat to carry everything down the Ohio. He also needs to know if William Clark will accept his invitation to join him.
Day-by-Day Pages In-depth Articles
Starting Up the Missouri
14 May–20 July 1804
On 14 May 1804—after more than a year of preparation and travel—the boats leave Camp River Dubois and head up the Missouri River. At St. Charles, the two captains, Clark’s slave York, interpreter George Drouillard, eight or nine French engagés, 34 enlisted men, and Lewis’s dog Seaman depart in three boats: the barge and two large pirogues.
Everyone quickly learns of the struggles and hazards of moving up the Missouri with its many sawyers and sandbars. Despite the overloaded boats and several close calls, they safely pass many landmarks made familiar by earlier traders from St. Louis.
Crossing the present state of Missouri and then heading north along the Kansas-Missouri border, they pass the homelands of the Omaha, Kansa, Otoe, and Pawnee. On 21 July, they reach the mouth of the Platte where only a handful of traders had ever continued north towards the Knife River Villages.
Day-by-Day Pages In-depth Articles
Portaging the Falls
13 June–12 July 1805
On 12 June 1805, Lewis leaves Decision Point at the mouth of the Marias to find the Great Falls of the Missouri. He finds them “truly magnifficent and sublimely grand”.
After traveling separate routes from Decision Point, Clark and Lewis reunite at what would become known as Lower Portage Camp. Clark leaves to survey a portage route, and Lewis attends to Sacagawea whose condition has become “Somewhat dangerous”.
Wheels and trucks are built from cottonwood trees, and the dugouts are hauled two miles up Belt Creek. Lewis leads the first canoe overland to the White Bear Islands where he focuses on construction of the iron-framed boat.
Several trips are needed—as are several truck repairs—to get all the canoes and baggage to the upper portage camp. While site seeing during the last stage, Clark, Sacagawea, and Jean Baptiste are nearly swept away in a flash flood.
Celebrating the Fourth of July, they drink the last of whiskey. Then, due to a lack of pitch pine in the area, the cover of the iron-framed boat leaks too much water to be of practical use and is cached.
Clark moves a few miles up the river and his crew builds two more canoes so that they can continue up the Missouri.
Day-by-Day Pages In-depth Articles
Roads to the Buffalo
10 June–14 July 1806
With the acquisition of horses, Native Nations crossing the Rocky Mountains to hunt for bison became more common. Two of their trails are used by the captains—in separate groups—to return to the bison-rich plains.
After crossing the Bitterroot Mountains on what is known today as the Lolo Trail, the expedition divides forces at Travelers’ Rest. Lewis takes one group east and north up the Blackfoot River and then over Lewis and Clark Pass. They return to their old camp above the Great Falls of the Missouri to retrieve supplies and specimens cached there.
From Travelers’ Rest, Clark goes up the Bitterroot River and crosses the Continental Divide at present Gibbons Pass. They cross the Big Hole Valley and return to Fortunate Camp where they had cached tobacco, food, and most of the canoes.
At the Headwaters of the Missouri, Sgt. Ordway’s detachment paddles the canoes down the Missouri destined for the portage of the Great Falls. Clark’s group–along with all the horses—travel up the Gallatin River valley on their way to the Yellowstone River.
Day-by-Day Pages In-depth Articles
Native Nations Encountered
Northwest Coast
Plateau / Southwest
Northeast
Featured Artist John James Audubon
Townsend’s Rocky Mountain Hare Male & Female
Columbian Black-Tailed Deer
Eastern Meadowlark
Although he never met Meriwether Lewis, America’s greatest ornithologist, John James Audubon, was just starting his career when Lewis and Clark returned, and there is ample evidence that he drew inspiration from Lewis and Clark’s writings. In 1808, Audubon moved to Louisville, where he was introduced to the Clark family, and became an acquaintance of George Rogers, Jonathan, and William. There is little doubt that during his time in Louisville Audubon heard numerous stories of Western exploration from the Clarks. In 1811, Audubon met a number of the French engagés from the Expedition, including Toussaint Charbonneau, and wrote that he “was delighted to learn from them many particulars of their interesting journey.”
More
Scientific Explorations
Their work in the emerging fields of botany, ethnography, geography, geology, and zoology are now considered classics of early American scientific literature.
Trail Diplomacy
Lewis and Clark left behind among many Indians a legacy of nonviolent contact. Those who came later enjoyed that legacy and too often betrayed it.
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.
A Military Corps
Throughout the expedition the soldiers were expected to conform to the rules and routines of the frontier soldier of 1803.
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.
Related Explorers
Lewis and Clark were among several significant explorers of North America both before and after the expedition.
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!
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 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.
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.
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.
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.
Language
From clichés and colorful sayings of the time to Native American languages, these pages feature the art of language.
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.
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.
Other Topics
Other topics include music, holidays, High Potential Historic Sites, and an index of articles from We Proceeded On.
Synopsis of the Expedition
by Harry W. Fritz
The entire story is told in these five webpages.
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.
Tools and Techniques
Explore the methods they used to get stuff done—from building canoes to making rope.
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.
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.
This site is provided as a public service by the
Lewis and Clark Trail Alliance
with cooperation and funding from the following organizations:
- Lewis and Clark National Historic Trail
- Montana Committee for the Humanities
- Idaho Governor's Lewis and Clark Trail Committee
- The Capital Gallery (Lewis and Clark Fort Mandan Foundation)
- Yellowstone Public Radio
Unless otherwise noted, journal excerpts are from The Journals of the Lewis and Clark Expedition, edited by Gary E. Moulton, 13 vols. (Lincoln: University of Nebraska Press, 1983-2001).