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!
On the Trail
August 25, 1803
Media leaks
In Louisville, Kentucky, a newspaper leaks a story that "Capt. William Clark and Mr. Lewis, (private secretary to the President)" will soon lead an expedition to the Pacific Ocean. In Pittsburgh, the expedition's barge nears completion.
August 25, 1804
Mountain of evil spirits
The captains take a large party to explore Spirit Mound—rumored to a mountain of evil spirits and little devils. They suffer from excessive heat and see birds eating swarms flying ants. Lewis collects a specimen of the Rocky Mountain bee plant.
August 25, 1805
A change of plans
While taking the expedition’s baggage over Lemhi Pass, Charbonneau informs Lewis that he and Sacagawea will soon return home and that Cameahwait’s People will also leave without completing the portage. On the Salmon River, Clark and his small group retrace their steps to reach their old campsite at Tower Rock. They subsist on berries and a small portion of fresh [...]
August 25, 1806
Empty Lakota encampment
Heading home on the Missouri River, they expedition stops at the Cheyenne River so that the captains can take celestial observations, and the men can hunt. Later in the day, they pass an empty Lakota encampment and recall the 'Troublesome Tetons' experienced on their way up the river in 1804.
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
Among the Yanktons
21 August–8 September 1804
Moving along the present border between Nebraska and South Dakota, the expedition turns its ‘enlightened‘ attention to several features in the upper Missouri River mythology.
Instead of a volcano, they find blue earth, cliffs of white marl, and burning bluffs. Lewis becomes ill while testing one of the minerals he found. Instead of La Véndrye’s Golden Sands, they find hills of wind-blown loess. Instead of a Spirit Moundmountain of little people and devilish spirits, they find birds feeding on pissants atop present Spirit Mound.
Pvt. George Shannon fails to return from a hunting trip, and Patrick Gass is promoted to sergeant. At Calumet Bluff, their attention turns to receiving the Yankton Sioux. For two days, a council with speeches, gifts, songs, and dances is held.
At Old Baldy—present The Tower in South Dakota—everybody but the camp guard visits a prairie dog town, and they manage to capture one as a live specimen. He would travel to the Knife River Villages, Washington City, and reside in Peale’s Museum in Philadelphia.
Their encounters here had been encouraging, but Shannon is still missing, and the Lakota Sioux homelands are just ahead.
Day-by-Day Pages In-depth Articles
Down the Western Valleys
11 August–10 September 1805
Having reached the end of the navigable Missouri, the captains—aided by Lemhi Shoshone Chief Cameahwait, Sacagawea‘s brother—begin acquiring horses, making pack saddles, and caching supplies they can no longer take with them.
With the help of the Lemhi Shoshones, everything is carried across the Continental Divide. Clark and their new guide they call Toby, scout the Salmon River and find it is not navigable.
After nearly three weeks with the Shoshones, the expedition moves down the Lemhi River valley and heads up the North Fork Salmon River. The captains ignore Toby’s advice to follow the Indian Road, and they are forced to spend a snowy night near the summit of Lost Trail Pass.
Dropping down from Lost Trail Pass, the Flathead Salish give them a warm welcome and sell them some horses. The expedition then proceeds down the Bitterroot River Valley to Travelers’ Rest where they have yet to cross the Bitterroot Mountains.
Day-by-Day Pages In-depth Articles
The Final Leg
11 August–26 September 1806
While hunting on the Missouri River below present Williston, North Dakota, Lewis is accidentally shot through the flesh of his buttocks. The next day, they catch up to Clark’s party at Reunion Bay. As one united force, they are ready to sprint down the river to St. Louis.
At the Knife River Villages, they drop off the Charbonneau family and pick up Chief Sheheke and interpreter René Jusseaume who will visit Washington City.
The faithful paddlers meet several traders and receive flour, whiskey, woven shirts, and most importantly, news of the United States.
On 23 September 1806, the citizens of St. Louis—having given them up for dead—provide a boisterous welcome. The captains commence writing.
Day-by-Day Pages In-depth Articles
Featured Members
William Clark (1784–1838)
Clark was a highly intelligent man, and in terms of the practical knowledge required to make his way in the wilderness, to lead men, and to succeed in the world of frontier politics, he was highly educated and consummately effective.
Silas Goodrich
Private
Silas Goodrich was the expedition’s principal fisherman. He also did well when trading for food with Indians from time to time.
William Bratton
Private
On 11 May 1805, Bratton appeared, running toward the river and yelling to be taken aboard quickly. He had shot a grizzly through the lungs, and the wounded bear had chased him for half a mile. The bear had lived at least two hours after first being shot.
Quick Links
Meriwether Lewis William Clark Sacagawea York Jean Baptiste Charbonneau Seaman All Members
Native Nations Encountered
Northwest Coast
Plateau / Southwest
Northeast
Featured Artist: Alfred Jacob Miller
Pierre and the Buffalo in Jean Baptiste, Mountain Man.
Snake Indian Camp in August 19, 1805.
Blackfeet on the Warpath in The Blackfeet Confederacy
Miller’s reputation rests on his single Green River Rendezvous trip from which he transformed his original sketches and notes into a lifetime of images. His work preserves details of clothing, equipment, camps, transport, and performance. At the same time, his images were made for patrons who valued romance and spectacle. For that reason, Miller should be read carefully.
More
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.
Tools and Techniques
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.
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.
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.
Language
From clichés and colorful sayings of the time to Native American languages, these pages feature the art of language.
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.
A Military Corps
Throughout the expedition the soldiers were expected to conform to the rules and routines of the frontier soldier of 1803.
Other Topics
Other topics include music, holidays, High Potential Historic Sites, and an index of articles from We Proceeded On.
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.
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.
Expedition Members
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.
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.
Synopsis of the Expedition
by Harry W. Fritz
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.
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.
Scientific Explorations
Their work in the emerging fields of botany, ethnography, geography, geology, and zoology are now considered classics of early American scientific literature.
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.
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.
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