"As far up the Missouri as the white settlements extend, an intercourse will probably be found to exist between them and the Spanish posts of St. Louis opposite Cahokia, or St. Genevieve opposite Kaskaskia. From still further up the river, the traders may furnish a conveyance for letters. Beyond that, you may perhaps be able to engage Indians to bring letters for the government to Cahokia or Kaskaskia, on promising that they shall there receive such special compensation as you shall have stipulated with them. Avail yourself of these means to communicate to us, at seasonable intervals, a copy of your journal, notes, and observations, of every kind, putting into cypher whatever might do injury if betrayed.
"On your arrival on that coast, endeavor to learn if there be any post within your reach frequented by the sea vessels of any nation, and to send two of your trusty people back by sea, in such way as shall appear practicable, with a copy of your notes; and should you be of opinion that the return of your party by the way they went will be imminently dangerous, then ship the whole, and return by sea, by the way either of Cape Horn or the Cape of Good Hope, as you shall be able. As you will be without money, clothes, or provisions, you must endeavor to use the credit of the United States to obtain them, for which purpose open letters of credit shall be furnished you, authorizing you to draw on the executive of the United States, or any of its officers, in any part of the world, on which draughts can be disposed of, and to apply with our recommendations to the consuls, agents, merchants, or citizens of any nation with which we have intercourse, assuring them in our name, that any aids they may furnish you, shall be honorably repaid, and on demand. Our consuls, Thomas Hewes at Batavia in Java, William Buchanan in the Isles of France and Bourbon, and John Elmslie at the Cape of Good Hope, will be able to supply your necessities by draughts on us.
"Should you find it safe to return by the way you go, after sending two of your party round by sea, or with your whole party, if no conveyance by sea can be found, do so; making such observations on your return, as may serve to supply, correct, or confirm those made on your outward journey.
"On re-entering the United States and reaching a place of safety, discharge any of your attendants who may desire and deserve it, procuring for them immediate payment of all arrears of pay and clothing which may have incurred since their departure, and assure them that they shall be recommended to the liberality of the legislature for the grant of a soldier's portion of land each, as proposed in my message to Congress; and repair yourself with your papers to the seat of government.
"To provide in the accident of your death, against anarchy, dispersion and the consequent danger to your party, and total failure of the enterprise, you are hereby authorized, by any instrument signed and written in your own hand, to name the person among them who shall succeed to the command on your decease, and by like instruments to change the nomination from time to time as further experience of the characters accompanying you shall point out superior fitness; and all the powers and authorities given to yourself are, in the event of your death, transferred to, and vested in the successor so named, with further power to him, and his successors in like manner, to name each his successor, who, on the death of his predecessor, shall be invested with all the powers and authorities given to yourself.
"Given under my hand at the city of Washington, this 20th day of June, 1803.
"Thomas Jefferson, President of the U. States of America."
While these things were going on here, the country of Louisiana, lately ceded by Spain to France, had been the subject of negotiation between us and this last power; and had actually been transferred to us by treaties executed at Paris on the 30th of April. This information, received about the 1st day of July, increased infinitely the interest we felt in the expedition, and lessened the apprehensions of interruption from other powers. Everything in this quarter being now prepared, Captain Lewis left Washington on the 5th of July, 1803, and proceeded to Pittsburg, where other articles had been ordered to be provided for him. The men, too, were to be selected from the military stations on the Ohio. Delays of preparation, difficulties of navigation down the Ohio, and other untoward obstructions, retarded his arrival at Cahokia until the season was so far advanced as to render it prudent to suspend his entering the Missouri before the ice should break up in the succeeding spring. From this time his journal, now published, will give the history of his journey to and from the Pacific ocean, until his return to St. Louis on the 23d of September, 1806. Never did a similar event excite more joy through the United States.
The humblest of its citizens had taken a lively interest in the issue of this journey, and looked forward with impatience for the information it would furnish. Their anxieties, too, for the safety of the corps had been kept in a state of excitement by lugubrious rumors, circulated from time to time on uncertain authorities, and uncontradicted by letters or other direct information from the time they had left the Mandan towns on their ascent up the river in April of the preceding year, 1805, until their actual return to St. Louis.
It was the middle of Feb. 1807, before Capt. Lewis with his companion Clarke reached the city of Washington, where Congress was then in session. That body granted to the two chiefs and their followers, the donation of lands which they had been encouraged to expect in reward of their toils and dangers. Capt. Lewis was soon after appointed Governor of Louisiana, and Capt. Clarke a General of its militia, and agent of the United States for Indian affairs in that department.