On his return to St. Louis, after nearly nine months of the hardest possible work in the North, Pike was allowed but a short rest. Two months and a half later he set out on his Western journey, which was to last a year, and during which he was to meet with vicissitudes which no one could have foreseen. It is not strange that he should have been chosen for the work of exploration in the South-west, which had for its object the investigation of the heads of the rivers flowing through the newly acquired Louisiana, making acquaintance with the Indians inhabiting the region, and putting an end to the constant wars between the different tribes. The good results achieved along the Mississippi had proved his especial fitness for similar work in other portions of the new domain of the United States, and were reason enough for giving Pike the command of this expedition. But it is altogether possible that General Wilkinson, then the commanding officer stationed at St. Louis, in charge of the whole Western country, may have had an ulterior object in sending Pike to investigate the Spanish boundaries of the South-west. It had been more than suspected that in some way Wilkinson was mixed up with the Aaron Burr conspiracy. Whether he was so or not, the Spanish authorities of Mexico believed that he was, and believed that the expedition led by Pike, of which they were informed well in advance, was connected with this conspiracy, and had for its object the acquiring of information detrimental to Spanish interests.

At all events the Spaniards had made every preparation to meet Pike and to capture his party, while Pike himself was intent only on carrying out his instructions to explore the heads of these Western rivers, and was ignorant of the existence of Burr’s conspiracy.

On July 15, 1806, Pike sailed from St. Louis up the Missouri River. With him were a lieutenant, a surgeon—Dr. Robinson—one sergeant, two corporals, sixteen privates, and one interpreter—twenty-one soldiers and two civilians—or twenty-three in all. Several of the party had been with Pike in the North. There were fifty-one Indians who had been redeemed from captivity among the Pottawatomies, and were now to be returned to the Osage and Pawnee tribes, to which they belonged. Two days after leaving St. Louis the party stopped at Mr. Morrison’s, and there met a young man named George Henry, who wanted to go West, and after a little time was engaged to accompany the party. He was a good French scholar and spoke some Spanish.

Progress with the boats, which were rowed up the stream, was of course slow, and Lieutenant Wilkinson and Dr. Robinson, with the Indians, marched across the country, while the boats toilfully pulled up the river. They killed some game, chiefly deer and turkeys. The Indians had a season of mourning each day about daylight, the crying continuing for about an hour. The interpreter told Pike that this was the custom, not only with those who had recently lost their relatives, but also with others who recalled to mind the loss of some friend, dead long since, and joined the other mourners purely from sympathy. They appeared extremely affected; tears ran down their cheeks, and they sobbed bitterly; but in a moment they would dry their cheeks and cease their cries. Their songs of grief ran: “My dear father exists no longer; have pity on me, O Great Spirit! You see I cry forever; dry my tears and give me comfort.” The warriors’ songs were: “Our enemies have slain my father [or mother]; he is lost to me and his family; I pray to you, O Master of Life, to preserve me until I avenge his death, and then do with me as thou wilt.”

On the 28th of July the party reached the mouth of the Osage River, and on the next day turned up the stream, heading for the Osage villages, where they were to leave a part of their Indians, and were to impress on the Osages the power and importance of the United States Government. Game was quite abundant, and deer and turkeys were killed daily; two, three, five, and on one day even nine deer having been taken, for the large body of men required considerable food.

There was trouble with the Indians from time to time. Some became jealous of their wives, and quarrelled with other men, and on one occasion there was some pilfering. But, on the whole, Pike managed the Indians extremely well. On the 14th of August a canoe was met coming down the river, manned by engagees of Mr. Chouteau, of St. Louis, by whom Pike sent letters to General Wilkinson. Relatives of the returned Osage prisoners came out to receive them. The meeting was very tender and affectionate, “wives throwing themselves into the arms of their husbands, parents embracing their children, and children their parents; brothers and sisters meeting, one from captivity, the other from the towns; they at the same time returning thanks to the good God for having brought them once more together; in short, the tout ensemble was such as to make polished society blush when compared with those savages, in whom the passions of the mind, whether joy, grief, fear, anger, or revenge, have their full scope.”

Sans Oreille (one of the Osages) made them a speech: “Osage, you now see your wives, your brothers, your daughters, your sons, redeemed from captivity. Who did this? Was it the Spaniards? No. The French? No. Had either of those people been governors of the country, your relatives might have rotted in captivity, and you never would have seen them; but Americans stretched forth their hands and they are returned to you! What can you do in return for all this goodness? Nothing; all your lives would not suffice to repay their goodness.” This man had children in captivity, not one of whom the party had been able to obtain for him.

In the Osage village Pike was well received, but a few days in the town and its neighborhood showed him some of the uncertainties of attempting to deal with a strange people. He had great difficulty in purchasing horses for his intended trip to the Pawnees, and where he had secured horses, some of them were stolen from him. However, after considerable difficulty, he got started, taking with him a number of Osages, warriors and chiefs, whom he wished to have make peace with the Pawnees, and also some of the redeemed Pawnee captives. From the very start, however, the Osages were a trouble to him, for they were constantly leaving him to return to their village, urged to do so by dreams or by laziness, or perhaps by fear of what their reception might be among the Pawnees. From the Osage village Pike travelled nearly south along the Osage River for several days; and then turning west, crossed Grand River, a tributary of the Arkansas, and going nearly due west to the head of this stream, crossed over the divide to the Smoky Hill fork of the Kansas River. Along Grand River game was very abundant, and here we have a glimpse of a quality in Pike which we must admire. “On the march,” he tells us, “we were continually passing through large herds of buffalo, elk, and cabrie [antelope], and I have no doubt that one hunter could support two hundred men. I prevented the men shooting at the game, not merely because of the scarcity of ammunition, but, as I conceived, the laws of morality forbid it also.”

On September 22 they began to meet Pawnees; and two days later others joined them, who possessed mules, horses, bridles, and blankets, which they had obtained of the Spaniards. Only a few of these Pawnees wore breech cloths, most of them being clad only in buffalo robes. On September 25 Pike had come close to the Pawnee village, which was situated on the Republican fork of the Kansas River, quite a long way above the mouth of the Solomon. Preparations to receive them, and to smoke with the Osages, were made by the Pawnees. The visiting Indians sat down on the prairie and the whites were a short distance in advance of them. The Pawnees came out from their village, halted about a mile from the strangers, and then, dividing into two troops, charged down upon them, singing their war song, shouting the war cry, rattling their lances and bows against their shields, and in all respects simulating the character of genuine warfare. The two bodies of Pawnees passed around the strangers and halted, and the chief of the Pawnees advanced to the centre of the circle and shook hands. One of the Osages offered the chief a pipe, and he smoked. The whole party then advanced to the village, and when near to it again halted. Again the Osages sat down in a row, facing the village, and now some of the Pawnees came to them with pipes and invited one and another to smoke; the Osages did so, and each received from the man whose pipe he smoked a stick, which represented a horse. These Pawnees no doubt belonged to the Republican Pawnees, or Kitkahahk tribe, the second in importance of the four Pawnee tribes.

Four days later a council was held at which not less than four hundred warriors were present. Pike’s notes of this interesting occasion were seized by the Spanish authorities later, and he never recovered them. He gives, however, this interesting flag incident: “The Spaniards had left several of their flags in this village, one of which was unfurled at the chief’s door the day of the grand council; and among various demands and charges I gave them was that the said flag should be delivered to me, and one of the United States’ flags received and hoisted in its place. This, probably, was carrying the pride of nations a little too far, as there had so lately been a large force of Spanish cavalry at the village, which had made a great impression on the minds of the young men, as to their power, consequence, etc., which my appearance with twenty infantry was by no means calculated to remove.