A Military Corps
Throughout the expedition the soldiers were expected to conform to the rules and routines of the frontier soldier of 1803.
On the Trail
May 27, 1803
Slow chronometer
In Philadelphia, Lewis writes to master surveyor Andrew Ellicott to let him know that he has obtained a chronometer for taking celestial observations. He says it has been cleaned and running 14 seconds too slow per day.
May 27, 1804
Arms inspection
In present Missouri, they meet two parties who have been trading with the Omaha and Osage. Lewis collects three more plant specimens including a cress that they often use to make salad. At evening camp near the mouth of the Gasconade River, an arms inspection is conducted.
May 27, 1805
Scenes of desolation
The expedition continues through the Upper Missouri River Breaks—now a National Monument. Sgt. Gass finds it offers nothing more than "scenes of barrenness and desolation." The enlisted men tow the boats against strong headwinds and currents making only fourteen miles for the day.
May 27, 1806
Lewis's woodpecker
At Long Camp, Lewis begins his twelve-day treatise on natural history. Today, he describes the Columbian ground squirrel and Lewis’s woodpecker, both new to science. Sgt. Ordway and two others leave for the Snake River to buy salmon, and a Nez Perce chief says the expedition can use any of his horses for food. Young Jean Baptiste continues to improve.
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
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
Along the Northern Reach
7 April–12 June 1805
At 4 p.m. on 7 April 1805, the permanent party heads their six canoes and two pirogues up the Missouri toward the Rocky Mountain barrier. At the same moment, Corp. Warfington and a small crew accompanied by Too Né’s delegation bound for a meeting with President Jefferson head downriver in the barge.
The Missouri River reaches it most northern position flowing from the Great Falls of the Missouri across present Montana and North Dakota. Moving through this stretch, the expedition passes the Yellowstone, Milk, Poplar, and Musselshell rivers. In the Upper Missouri River Breaks, the journalists describe both “scenes of barrenness and desolation” and “seens of visionary inchantment”.
At the mouth of the Marias, they come to a river they did not expect. They are unsure which fork is the true Missouri. After ten days exploring each, the captains decide to take the left fork.
Lewis scouts ahead to find the Falls of the Missouri that they are expecting. Sacagawea becomes dangerously ill and travels with Clark and the boats until they can go no farther—below present Belt Creek.
If the expedition is to be successful, Sacagawea will need gain her health, and the heavy boats will need to be carted around not one, but several waterfalls on a long and difficult portage.
Day-by-Day Pages In-depth Articles
Return to the Clearwater
23 March–9 June 1806
The desire to return to St. Louis motivates the paddlers as they head up the Columbia River. Across from the Sandy River, they stop to hunt and dry meat. They explore the Willamette and Sandy hoping that one of them is the fabled river that comes from California.
Below Celilo Falls, they begin trading for horses and by the time they reach the Walla Walla River, they have enough horses to take the overland Travois Trail back to the Snake River. They then continue by horse up the Clearwater River.
At Kamiah in present Idaho, they establish a “Long Camp” among the Nez Perce to wait for mountain snows to melt. Sgt. Ordway takes a side trip to the Salmon and Snake rivers where some Nez Perce fishers are catching salmon.
After five weeks sharing with the Nez Perce, they head to the mountain trails that will take them to the land of the buffalo.
Day-by-Day Pages In-depth Articles
Featured Members
Richard Windsor
Private
Windsor helped recover three orphaned grizzly bear cubs of a sow they killed on a hunt in early April of 1806. According to Lewis, they traded the cubs to some coastal Indians, who, “fancyed these petts and gave us wappetoe in exchange for them.”
Reubin Field
Private
Reubin and his brother Joseph (about a year older) were among the best hunters, but Reubin was possibly the better shot. He was, at least, at Camp Dubois on 16 January 1804, when Clark’s men set up a shooting match with some local residents.
John Colter
Private
Colter left a legacy of western lore, not the least of which was his famous run from the Blackfeet Indians and his exploration of “Colter’s Hell.” Yet his contributions to the expedition were also many.
Quick Links
Meriwether Lewis William Clark Sacagawea York Jean Baptiste Charbonneau Seaman All Members
Native Nations Encountered
Northwest Coast
Plateau / Southwest
Northeast
Featured Artist: John Mix Stanley
The Bears Tooth
Fort Owen—Flathead Village
Lolo Hot Springs
The American portraitist, artist and illustrator John Mix Stanley (1814-1872), served as one of the official artists with the Stevens railroad survey party to the Northwest. His record of highlights along the route often combined documentary verisimilitude with romantic fantasy.
More
Related Explorers
Lewis and Clark were among several significant explorers of North America both before and after the expedition.
Synopsis of the Expedition
by Harry W. Fritz
Other Topics
Other topics include music, holidays, High Potential Historic Sites, and an index of articles from We Proceeded On.
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.
Tools and Techniques
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.
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.
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.
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!
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.
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.
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.
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.
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.
Expedition Members
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.
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.
Language
From clichés and colorful sayings of the time to Native American languages, these pages feature the art of language.
Scientific Explorations
Their work in the emerging fields of botany, ethnography, geography, geology, and zoology are now considered classics of early American scientific literature.
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.
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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