Read alongside four related 1803 letters (including the “Portable Soup” letter to General William Irvine), it reconstructs Lewis’s spring-to-summer travels and introduces the cadre of quartermasters, purveyors, and armory officers — Israel Whelan, Thomas Cushing, Joseph Perkins, George Ingels, and Irvine — who outfitted the expedition. The find reveals Lewis at his logistical best: not only an explorer, but a meticulous quartermaster and project manager.

First published in the Lewis and Clark Trail Heritage Foundation’s journal, We Proceeded On (August 2009). This summary is provided for reference on the Lewis and Clark Research archive; the full article is available at the source link.

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Framing the sketches is a concise narrative of the war’s origins — from the embargo years through the treaties of 1815 — along with an appendix on the presidents involved. It is a useful group portrait of where the expedition’s people landed in the decade after the journey home.

This summary is provided for reference on the Lewis and Clark Research archive; the full compilation by Lorna Hainesworth is available at the source link.

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The expedition connection is direct. In April 1803, Meriwether Lewis traveled to Ellicott’s home in Lancaster, Pennsylvania, to learn celestial navigation and the practical field surveying he would need in the West, staying about three weeks. Ellicott — himself once a student of Robert Patterson, another of Lewis’s tutors — taught him to fix latitude and longitude with sextant and chronometer. Ellicott’s earlier mapping of the Ohio–Mississippi confluence also informed Nicholas King’s compiled map carried by the Corps of Discovery.

This summary is provided for reference on the Lewis and Clark Research archive; the full article by Lorna Hainesworth is available at the source link.

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That anxiety is the throughline to Lewis and Clark. The same political drive to bind East and West — pressed by Jefferson’s treasury secretary Albert Gallatin — produced the National Road, which Jefferson signed into law in 1806, extending the improved corridor from Cumberland toward the Ohio River. The roads described here are the eastern arteries along which the expedition’s people, supplies, and correspondence moved.

This summary is provided for reference on the Lewis and Clark Research archive; the full article by Lorna Hainesworth is available at the source link.

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For Lewis and Clark, the road matters as the realization of the East–West link Jefferson and Albert Gallatin pushed for in the very years of the expedition — and because its precursor, Braddock’s Road, was the route Meriwether Lewis himself took from Harpers Ferry to Pittsburgh in the summer of 1803.

This summary is provided for reference on the Lewis and Clark Research archive; the full article by Lorna Hainesworth is available at the source link.

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Thomas Jefferson never set foot on the expedition trail, yet his shadow falls across the journals from St. Louis to the Pacific and back. As the president who commissioned the Corps of Discovery, dispatched its instructions, and waited in Washington for its specimens and reports, Jefferson is invoked by Lewis and Clark in three principal ways: as the recipient of scientific and political dispatches, as the namesake of geographic features and the image on diplomatic medals, and as the rhetorical “great father” through whom the captains addressed Native nations. The journals reveal a man whose authority structured the enterprise even at a distance of thousands of miles.

Recipient of Reports and Specimens

The clearest documentary evidence of Jefferson’s role appears at Fort Mandan in the spring of 1805, when Lewis and Clark prepared the keelboat to return downriver with the expedition’s first major shipment east. Clark’s entries on April 2 and 3, 1805 enumerate the contents at length:

I conclude to Send my journal to the President of the United States in its original State for his own perusial, untill I call for it or Some friend if I should not return, an this journal is from the 13th of May 1804 untill the 3rd of April 1805. (Clark, April 2, 1805)

The next day Clark continued packing items destined for Jefferson personally:

we are all day ingaged packing up Sundery articles to be Sent to the President of the U. S. … No. 11 a Martin Skin, Containing the tail of a Mule Deer, a weasel and three Squirels from the Rockey mountains… Box No. 2, contains 4 Buffalow Robes, and a ear of Mandan Corn. The large Trunk Contains a male & female Brarow and female’s Skeliton. (Clark, April 3, 1805)

The shipment included live prairie dogs, magpies, Native artifacts, mineral samples, and Clark’s original journal — an extraordinary act of trust placed in Corporal Warfington’s returning party. On 7 April 1805 the keelboat started down with specimens, maps, and reports for Jefferson, and the permanent party turned upriver. Lewis’s own sentence for that country — “on which the foot of civilized man had never trodden” — is his claim, not a fact the journals can prove. Nations already lived there.

Namesake of the Great Southern Fork

Among the most enduring of Jefferson’s marks on the journey is the river that bears his name. When the Corps reached the Three Forks of the Missouri in late July 1805, the captains named the southwest fork Jefferson’s River. The journals then trace the party’s painful ascent of it for weeks. Lewis on July 30, 1805 writes simply, “we reloaded our canoes and set out, ascending Jeffersons river,” then logs the bends, beaver dams, and rapids that followed. On August 7, Clark observes:

The Lattitude of the Mouth of Wisdom River is 45° 2′ 21.6″ North, we proceeded up the Main Middle or S. E. fork… The river Jefferson above Wisdom is gentle Crooked and about 40 yards wide. (Clark, August 7, 1805)

Lewis’s parallel entry that day notes that as supplies dwindled they cached a canoe and “the party proceeded with Capt. Clark up Jefferson’s river.” The Jefferson became the highway by which the expedition approached the Continental Divide; Sacagawea recognized her homeland along its banks (Lewis, July 30, 1805), and it was up this river that Clark led the main party while Lewis pressed ahead to find the Shoshone.

Even on the return, Jefferson’s name marked geography. On July 8, 1806, Clark reached the canoe cache on the upper river: “we proceeded on down the forke which is here but Small 9 Miles to our encampment of 17 Augt. at which place we Sunk our Canoes & buried Some articles.” Two days later, on July 10, 1806, he descended “Down Jeffersons river on the East Side through Sarviss Vally and rattle snake mountain.” In Clark’s February 14, 1806 retrospective summary at Fort Clatsop, the river anchors his master map: “the Missouri Jefferson’s river the S. E. branch of the Columbia or Lewis’s river, Koos-koos-ke and Columbia… are laid down by celestial observations and Survey.”

A second feature also bore the president’s name. On April 22, 1806, descending the Columbia, Clark wrote: “I also discovered the top of Mt. Jefferson which is Covered with Snow and is S to W.”

Image on the Peace Medals

Jefferson traveled the continent in another form: stamped on the silver “Indian peace medals” the captains distributed at councils. These appear repeatedly in the diplomatic record. At the Mandan villages on October 29, 1804, Clark recorded a council in which speeches and presents were exchanged. Most explicitly, in Lewis’s May 11, 1806 entry among the Chopunnish (Nez Perce), the captain notes giving a medal to the chief Yoom-park’-kar-tim:

to this man we gave a medal of the smal kind. those with the likeness of Mr. Jefferson have all been disposed of except one of the largest size which we reserve for some great Cheif on the Yellow rock river. (Lewis, May 11, 1806)

The medals — and through them Jefferson’s face — were the physical tokens of an asserted political relationship reaching from the Missouri to the Columbia.

The “Great Father” in Diplomacy

In council oratory, Jefferson is rendered as the “great father” whose words the captains carry. The clearest example comes from Clark’s August 15, 1806 speech at the Mandan villages on the homeward journey:

I informed them that I Still Spoke the Same words which we had Spoken to them when we first arived in their Country in the fall of 1804. we then envited them to visit their great father the president of the U. States and to hear his own Councils and receive his Gifts from his own hands. (Clark, August 15, 1806)

A week later, on August 22, 1806, Clark recorded the Mandan chiefs’ refusal to descend the Missouri because of Sioux dangers, frustrating the president’s hope of receiving a delegation. Earlier, on June 4, 1806, among the Nez Perce, the captains “repeeted the promisces we had formerly made them and envited them to the Missouri with us, they declined going untill the latter end of the Summer.” The president’s wish to bring western chiefs east was a recurring, and only partly successful, diplomatic theme.

The Returning Diplomatic Threads

On the descent of the Missouri in September 1806, the captains encountered evidence of Jefferson’s continuing reach. On September 12, 1806, Clark met the trader Joseph Gravelines, dispatched by the president himself:

we found Mr. Jo. Gravelin the Ricaras enterpreter whome we had Sent down with a Ricaras Chief in the Spring of 1805 and old Mr. Durion the Sieux enterpreter, we examined the instructions of those interpreters and found that Gravelin was ordered to the Ricaras with a Speach from the president of the U. States to that nation and some presents which had been given the Ricara Cheif who had visited the U. States. (Clark, September 12, 1806)

The Arikara chief sent to Washington in 1805 had died, and Gravelines was now bearing Jefferson’s condolences and gifts back upriver — a poignant illustration of the human costs and continuing administrative work of the president’s Indian policy. Days later, on September 17, 1806, meeting Captain McClellan ascending the Missouri, Clark learned that “the President of the U. States had yet hopes of us” even as the rest of the country had nearly given the expedition up for lost.

Lewis’s Personal Bond

Lewis’s relationship to Jefferson was the most intimate, having served as the president’s private secretary. On August 9, 1805, preparing to leave the canoes and strike overland to find the Shoshone, Lewis paused to write — partly, he confessed, from a sense of duty to his patron:

I acquired leasure to accomplish some wrightings which I conceived from the nature of my instructions necessary lest any accedent should befall me on the long and reather hazardous rout I was now about to take. (Lewis, August 9, 1805)

The phrase “the nature of my instructions” gestures unmistakably toward Jefferson’s famous June 1803 letter of orders, the document that defined the expedition’s scientific, geographic, and diplomatic missions.

Conclusion: A Government Man’s Geography

Across more than fifty entries, Jefferson is named as president, patron, geographer, and rhetorical father. He never speaks in his own voice in the journals — every appearance is filtered through Lewis’s and Clark’s pens — but the journals show with unusual clarity how a single distant figure structured an exploration. The shipments at Fort Mandan, the river bearing his name, the medals stamped with his likeness, the speeches invoking him in Hidatsa, Shoshone, Nez Perce, and Mandan councils, and the trader Gravelines bearing his condolences upriver: all are traces of a presidency reaching across a continent it had never seen.

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English Translation

Sir, Captain Lewis on his visit engaged the chief of the [Iowa, Baxoje] tribe to come here, more chiefs of this tribe came a few days ago and after the promise that Captain Lewis made them, so that the Sioux tribe would go see you in the federal Cite, these chiefs demanded that I guide them. I observed them as they need your orders before everything and I promised to ask you. I satisfied with this promise in this way that the counsel I gave them and the expectations that they have conceived that they are worthy of your benevolence. The [Sauk, oθaakiiwaki] have also asked that two or three of their chiefs be on the same voyage: If you judge this necessary, Sir, I will execute your orders with precision and I think that they will result in the best effects of such a voyage. These Chiefs of tribes, who are all considerable, pass down to their descendants immense strengths that have been seen in the United States and beyond evidence of this physical superiority that will be very be very easy to maintain in dependence and subordination. They return home like the [Osages, Wazhazhe] persuaded that their genuine interest is to always maintain their peace with the United States. The [Odawa, Adaawe] asked me to remind you, Sir, the promise that you made them to build a mill in the home of the [Osages, Wazhazhe], and they asked me to write to you, I am informed of the price that this structure could cost, an opening committed to being delivered entirely finished for the sum of $1200. I believe that it is not possible to obtain a lesser price seeing the remoteness of the location and the difficulty of transporting the necessary materials for this structure. In my last I had the honor to write you that my brother is going to the Federal city as the representative of the inhabitants of this district, but a bit of Gout forced him to renounce his journey. Enclosed is an overview of the savage population of this district. I have the honor to be, with profound respect Sir, Your very humble and very obedient servant. Pierre Chouteau Enclosure

Original French Text

St. Louis le 19 nobr. 1804 Monsieur Le Capitaine Lewis a son passage avoit engagé les chef de la Tribus Ayoua a venir ici, plusieurs chefs de cette Tribus y sont venus il y a peu de Jours et d’Après la promesse que le Capne Lewis leur avoit fait, ainsi qu’a la Tribus Sioux d’aller vous voir a federal Cité, ces chefs m’ont demandés a ce que Je les y Conduisent. Je leurs ai observé qu’il faloit vos ordres avant tout et Je leurs ay promis de vous les demander, Je les ai renvoyé satisfait de cette promesse ainsi que des Conseils que Je leurs ai donné & des esperances qu’ils doivent Concevoir sils se rendoient digne de votre bienveillance; les sakias ont egalement demandés a ce que deux ou Trois de leurs chefs soyent du même voyage: Si vous Jugez la chose necessaire, Monsieur, J’executerai vos ordres avec exactitude et Je pense qu’il resulteroit les meilleurs effets d un pareils Voyage, Ces chefs de tribus, qui Toutes sont Considerables, Transmetteroient a leurs descendants les forces immense qui auroient vu dans les Etats Unis et d après l evidence de cete Superiotée phisique il seroit bien plus facile après de les maintenir dans la dependance et dans la subordination, ils retourneroient chez eux Comme les Ozages bien Persuadés que leur veritable interêt est de se maintenir Toujours en paix avec les Etats Unis. Les cheveux, ma prié vous rappeller Monsieur la promesse que vous lui avez fait de faire faire un moulin chez les Ozages, il ma bien prié de vous l’ecrire. Je me suis informé du Prix que pourroit coûter cette batisse, un ouvrier s’engageroit a le livrer entierement fini pour La somme de 1200$. Je crois qu’il ne seroit Pas Possible dobtenir un moindre prix vu l’eloignement des lieux et les difficultés du transports des choses nécessaire pour cette batisse. Dans ma precedente J’avais l’honneur de vous marquer que mon frere se rendoit a federal Cité comme Representant des habitants de ce District, mais un accez de Goutte la forcé de renoncer a ce voyage; Cy Joint un apperçu de la population sauvage de ce District. J’ay l’honneur dêtre avec un profond respect Monsieur, Votre très heumble et trés obeissant serviteur Pre. Chouteau

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English Translation

Sir, Captain Lewis, during the stay he had here before departing for Missouri, charged me with sending you some notes relating to the savage nations, and the trade that they do in Louisiana and to whom this district is sensitive. As I occupied myself with this important work, I was named by the people of the district of Louisiana to present their petition to congress; a mission I accepted with joy, hoping they It would offer me the occasion to make your acquaintance and assure you of my devotion. So, I have suspended my work, preferring to respond in person to the questions that Mr. Lewis left me via writing. However, after five days of travel, I was stopped by the sweat and forced to return to my home. I cannot express to you, sir, the extent of my sorrow at this setback, which prevented me from responding to the trust of my principals and at the same time satisfy the desires of Captain Lewis; but to remedy this as soon as possible, I sent to Mr. J. Wm. Eppes, following the advice of Mr. Harrison our governor, the petition of our inhabitants begging him to wish to be the advocate of our cause and to help with his council Mr. Eligius Fromentin who is like me a representative of the people of the District of Louisianna: I shall pick up my work again with ardor, to send it to you as promptly as possible; but as it will demand much thought and time, I believed it necessary, at this time, to send you some notes, which may interest you, although they do not entirely respond to Captain Lewis’ questions. As for news that is certain, I learned that Captain Lewis arrived without any accident 850 miles from the mouth of the Missouri around the 19th of August, as the savages received him perfectly well; and I presume that he will pass the winter season with the Mandanes, about 1300 miles from here. If I have the pleasure to see you, my intention will be to recommend to you the inhabitants of Louisianna as submitted and loyal citizens but who need encouragement and for you to inspire for them the state that they deserve. I dare to flatter myself that you will not find what I have done here by writing wrong. I intend to do so if I have the honor to see you. My supporters and I, Sir, we are infinitely jealous to earn your esteem, and have decided to do everything to earn it. If I can be happy enough to be useful to you in anything whatsoever, I beg you to state it without reserve, to the one who has the honor to be with the sentiments of most profound respect Sir. Your Very humble & very obedient servant, Auguste Chouteau

Original French Text

St. Louis Le 20. Novembre 1804 Monsieur Monsr. le capitaine Lewis dans le séjour qu’il a fait ici avant son depart pour le Missoury, m’avoit chargé de vous envoyer des notes relatives aux nations sauvages, et au commerce qui se fait dans la Louisiane, et dont ce district est susceptible; Comme Je m’occupois de ce travail conséquent, J’ai été nommé par les habitans du District de la Louisiane, pour présenter au Congres leur petition; Mission que j’ai accepté avec joie, espérant qu’elle me fourniroit l’occasion de faire votre connoissance, et de vous assurer de mon entier dévouement. J’ai alors suspendu mon travail, préferant répondre de vive voix, aux questions que Mr Lewis m’a laissées par écrit. Mais après cinq jours de route, J’ai été arreté par la goutte, et forcé de revenir chez moi. Je ne puis vous exprimer, Monsieur, combien Je suis peiné de ce contretems, qui m’empêche de répondre à la confiance de mes cometans et en même temps de satisfaire aux desirs du Cape. Lewis; mais pour y remedier autant que possible, J’envoye à Mr. J. Wm. Eppes d’après le conseil de Mr Harrison notre gouverneur, la petition de nos habitans, en le priant de vouloir bien être l’avocat de notre cause, et d’aider de ses conseils Mr Eligius Fromentin, qui est comme moi réprésentans des habitans du District de la Louisiane: Je vais reprendre avec ardeur, mon travail, pour vous l’envoyer le plus promptement possible; mais comme il exige beaucoup de reflexions et de temps, Je crois devoir par cette occasion, vous envoyer quelques notes, qui pourront vous intéresser, quoiqu’elles ne repondent point entierement aux questions du Capitaine Lewis. Par des nouvelles certaines, J’ai appris que le Cape. Lewis étoit arrivé sans aucun accident a Huit cent cinquante mille de l’ambouchure du Missoury a l’époque du 19. d’aoust dernier, que les sauvages l’avoyent parfaitement reçus; et Je presume qu’il passera la saison de L’hivers chez les Mandanes, à environ 1300 Miles d’ici. Si J’avois eu le bonheur de vous voir, mon intention étoit de vous recommander les habitans de la Louisiane comme des Citoyens soumis et fidels, mais qui ont besoin d’encouragement, et de vous inspirer pour eux, l’état qu’ils meritent. J’ose me flatter que vous ne trouverez pas mauvais, que Je fasse par ecrit, ce que Je conptois faire si J’avois eu L’honneur de vous voir. Mes cometans et moi, Monsieur, nous sommes infiniment jaloux de meriter votre estime, et sommes décidés à faire tout pour l’obtenir Si J’étois assez heureux pour pouvoir vous être utile en quelque chose que ce soit, Je vous prie de disposer sans réserve, de celui que a L’honneur d’etre avec les sentiments du respect le plus profond Monsieur Votre Très humble & très obeissant serviteur. Augte. Chouteau

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English Translation

Sir, The [Osage, Wazhazhe] chiefs who arrives last in St. Louis gave me indirect news of Captain Lewis. At the time that they departed their nation they saw two Indians of the [Otoe, Jiwére] nation who were going to St. Louis and were afraid of continuing their route by the unfortunate blow that was struck on the [Osages, Wazhazhe]. These [Otoes, Jiwére] reported that they had accompanied Captain Lewis to just a short distance from the sea to the South when they arrived at an establishment of whites where Captain Lewis procured some horses that they needed to continue their route. I desire and I hope good news is confirmed by next spring. Governor Wilkinson has no doubt informed you that I returned to him a commission of captain that was sent to me by a Panismahas chief to whom it was granted by the Governor of New Mexico. This step and several others of which we were only informed by hearsay are the plans by which the Spanish government seeks to become close with the Nations of Missouri. Be convinced, Sir, that I will do I in my power to entice the Indian Nations and attach them to the American government in all the respects. The United States can only withdraw the largest advantages from an intimate liaison and frequent communication with the Missouri and Mississippi Nations. Believe, sit, the I am doing all that is in my power to respond to the confidence that it pleased you to honor me with. I have the honor to be with the most profound respect Sir Your very humble and very obedient servant. Pierre Chouteau

Original French Text

St Louis Le 1er Decembre 1805. Monsieur Les chefs osages qui sont arrivés dernierement a St Louis m’ont donné des Nouvelles indirectes de Mr. Le Capn Lewis au moment de leur depart de leur nation ils ont vu deux Indiens de la Nation otto qui venoient a St Louis et qui ont craint de Continuer Leur route par le coup malheureux qui venoit d’être frappé sur les osages, ces ottos rapportent qu’ils ont accompagné le Capitaine Lewis jusqu’a peu de distance de la mer du Sud qu’ils sont arrivés a un etablissement de blancs où le Capn Lewis s’est procuré des chevaux dont il avoit besoin pour continuer sa route, Je desire et j’espere que ces heureuses nouvelles seront Confirmées au printems prochain. Monsr. le Gouverneur Wilkinson vous a sans doute informé que je lui ai remis une commission de capitaine qui m’a été envoyée par un chef Panis auquel elle avoit été accordée par le Gouverneur du Nouveau Mexique, Cette demarche et plusieurs autres dont nous ne sommes informés que par oui dires sont des preuves que le Gouvernement Espagnol cherche a se lier intimement avec les Nations du Missoury, soyez persuadé Monsieur, que je ferai tout ce qui sera en mon pouvoir pour attirer les Nations indiennes et les attacher au gouvernement americain sous tous les rapports Les Etats Onis ne peuvent que retirer les plus grands avantages d’une Liaison intime et d’une Communication frequente avec les Nations du Missoury et du Mississipy, Croyez, Monsieur, que je ferai toujours tout ce qui sera en mon pouvoir pour repondre a la confiance dont il Vous a plu de m’honorer. J’ai l’honneur d’etre avec le plus profond respect Monsieur Votre très humble et tres obeissant serviteur. Pre. Chouteau

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English Translation

Sir, Captain Lewis has sent by his barge returning from high on the Missouri, some magpies, a pheasant, and a prairie dog with two trunks that followed their instructions that they must be sent to you. I sent them down to New Orleans and addressed them to Governor Clayborn. I believe that this journey is the best sure that the animals will arrive sage and sound in the Federal city. Captain Lewis sent 45 savages from nations from the high Missouri to be sent to the seat of the government but the warm season is too unfavorable for traveling for the savages accustomed to cold countries, as they expressed in the talks that I held with them, Governor Harrison and I have judged it more prudent and absolutely necessary to put back the journey to autumn and to gather at the same time the [Sauk, oθaakiiwaki] and Fox [Meskwaki, Meshkwahkihaki] already requested by the government. As a consequence, several of these savages have returned to their nations and I will make a party of Sioux leave who are presently here because the closest village of their nation is established on the Mocus river where they will return at the end of next September to assemble with different chiefs of other nations and with [Sauk, oθaakiiwaki] and Fox [Meskwaki, Meshkwahkihaki] already requested by the government that I am ready to bring to the Federal city. I have the honor to be with the greatest respect Sir your very humble and very obedient servant. Pierre Chouteau

Original French Text

St. Louis [on or before 20 July] Monsieur Mr Le Capn Lewis ayant envoyé par sa barge revenue dernierement du haut Missoury, des Pies, un faisan, et un chien de prairye avec deux Malles qui suivant ses instructions doivent vous etre envoyés, Je les ai fait descendre à la Nouvelle Orleans et les ai addressé à Mr Le gouverneur Clayborn, J’ai cru que cette Voye etoit La plus sure pour que ces animaux arrivent sain et sauf à Federal city. Mr Le capn Lewis a envoyé quarante-cinq Sauvages des nations du haut du Missoury pour etre envoyé au siege du gouvernement mais la saison des chaleurs etant trop defavorable pour faire voyager des sauvages accoutumés aux païs froids, comme eux mêmes l’ont exprimé dans les conseils que j’ai tenu avec eux, Mr Le gouverneur harrison et moi avons jugé plus à propos et même de necessité absolue de remettre ce voyage à L’automne et de reunir en même tems Les sackias et Renards deja demandés par le gouvernement. En consequence plusieurs de ces Sauvages sont retournés dans leurs nations et je vais faire partir un parti de sioux actuellement ici pour le plus proche village de leur nation etabli sur La rivière des Mocus d’ou ils reviendront à la fin de Septembre prochain pour se reunir aux differens chefs des autres Nations et aux sakias et Renards deja demandés par le gouvernement que je serai pret a conduire a Federal city. J’ai L’honneur d’etre avec Le plus profond respect Monsieur Votre trés humble et très obeissant serviteur Pre. Chouteau

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