At this time the shadow of the American Fur Company, the great monopoly of the Upper Missouri region, fell across the Rocky Mountains. In February 1830 the newly organized “Western Department” of this company, determined to capture the lucrative mountain trade, sent out an expedition from St. Louis under Andrew Drips, Lucien Fontenelle and one Robidoux. Our chief source of information about this company during the early 1830’s is the journal of Warren A. Ferris. From an encampment near the Big Hole country of Montana, Ferris writes: “On the 8th [of October, 1831] two of our men accompanied by three or four Indians departed for the Trois Tetons, to meet Mr. Dripps who was expected this fall from the Council Bluffs, with an equipment of men, horses, and merchandise.” From spring camping grounds on the Bear and Snake River tributaries, the brigades of the rival companies converged on Pierre’s Hole, where the Rocky Mountain Fur Company partners had scheduled their rendezvous for 1832. Although they welcomed peaceful Indians and “free” trappers, they expressly did not invite their competitors of the American Fur Company who, nevertheless decided to attend. Rumors of the impending conclave of the “mountain men” also reached the scattered bands of independent trappers, among whom was George Nidever. In the spring Nidever’s band trapped up the Green River until May, intending to continue on to “the head waters of the Columbia,” but turned back when they learned that “the place we intended going was already being trapped by other companies.” (This strongly suggests that somebody, probably Rocky Mountain men, were trapping in Jackson’s Hole prior to the rendezvous.) Returning to the Platte River, they met “O’Felon” and Moses “Black” Harris, two other independent traders, with whom they proceeded by way of Teton Pass to the rendezvous, where they arrived on July 4. The experienced William Sublette, one-time partner, had contracted with the Rocky Mountain Fur Company to supply trade goods, and to take out the beaver hides. With Robert Campbell he set out for St. Louis in May 1832 with over 100 men. At Independence he picked up a band of eighteen green New Englanders under Nathaniel J. Wyeth, an ambitious young man who had hopes of succeeding, where John Jacob Astor had failed, in establishing a fur-trading empire in Oregon. At Laramie’s Fork he recruited some twenty trappers under Alfred K. Stephens, and other trappers were picked up farther on. Not the least remarkable feature of this expedition was that at least five of its members kept notes—William Sublette, the methodical Nathaniel Wyeth, his brother John B. Wyeth, another of his followers named John Ball, and Zenas Leonard, one of the “free” trappers with Stephens.