Near the conclusion of the second exploring expedition, and at the time when Kit Carson took his departure from the party, Col. Fremont had received a promise from him to the effect that he would join, as guide, any party of discovery, for the further exploration of the Rocky Mountains, which he, Col. Fremont, should command. During the active duties of a farmer's life, and just as Kit Carson had brought his new enterprise into working order, an expressman from Col. Fremont arrived at his ranche, bearing dispatches to Carson. The purport of these dispatches was to remind Kit Carson of his promise, to inform him of the organization of a third expedition, and to appoint a place where Kit Carson might find his old commander. The express found Carson in the midst of so many cares and anxieties concerning his new project, that it became a very difficult matter for him to keep his word. But the sacrifice of pecuniary interest was but a slight consideration with Kit, when weighed in the balance against his promise. He knew that his promise had not been either lightly given or received. Col. Fremont, by it, had the first right to his time and energies, and had formed his expectations accordingly; and Kit lost, therefore, no time in making preparations to satisfy these expectations by reporting himself at the appointed place of meeting, ready for the march. But to effect this was attended with no slight difficulties. Kit Carson had a large sum invested in his improvements, by way of payments for labor, as well as purchases of stock, provision, farming tools, utensils, teams, wagons, seed, and stock in general. The erection of his house, barns, etc., was under an advance which reached far towards completion. But with Kit Carson, his word was worth more than prospective losses which its fulfillment would entail. In company with Mr. Owens, he set himself actively at work to effect a complete sell-out. After a good deal of anxious inquiry, he found a man who was willing to pay one half of the real valuation attached to his property. Notwithstanding this sacrifice, the bargain was closed and the business details completed. In company with Mr. Owens, Kit Carson once more bade his family and friends an affectionate farewell. They took the route for Bent's Fort, and arrived there in the course of a few days. The meeting between Fremont and Carson was mutually satisfactory. With his friend, Mr. Owens, he joined the Third expedition of Col. Fremont, which was the last one which he undertook by authority of the United States government.