Green River was the rendezvous for the mountaineers in 1831; and to Green River came trappers of the Columbia, of the Three Forks, of the Missouri, of the Bighorn and Yellowstone and Platte. From St. Louis came the traders to exchange supplies for pelts; and from every habitable valley of the mountains native tribes to barter furs, sell horses for transport, carouse at the merry meeting and spy on what the white hunters were doing. For a month all was the confusion of a gipsy camp or Oriental fair.
French-Canadian voyageurs who had come up to raft the season's cargo down-stream to St. Louis jostled shoulders with mountaineers from the Spanish settlements to the south and American trappers from the Columbia to the north and free trappers who had ranged every forest of America from Labrador to Mexico.[32] Merchants from St. Louis, like General Ashley, the foremost leader of Rocky Mountain trappers, descendants from Scottish nobility like Kenneth MacKenzie of Fort Union, miscellaneous gentlemen of adventure like Captain Bonneville, or Wyeth of Boston, or Baron Stuart—all with retinues of followers like mediæval lords—found themselves hobnobbing at the rendezvous with mighty Indian sachems, Crows or Pend d'Oreilles or Flat Heads, clad in little else than moccasins, a buffalo-skin blanket, and a pompous dignity.
Among the underlings was a time of wild revel, drinking daylight out and daylight in, decking themselves in tawdry finery for the one dress occasion of the year, and gambling sober or drunk till all the season's earnings, pelts and clothing and horses and traps, were gone.
The partners—as the Rocky Mountain men called themselves in distinction to the bourgeois of the French, the factors of the Hudson's Bay, the partisans of the American Fur Company—held confabs over crumpled maps, planning the next season's hunt, drawing in roughly the fresh information brought down each year of new regions, and plotting out all sections of the mountains for the different brigades.
This year a new set of faces appeared at the rendezvous, from thirty to fifty men with full quota of saddle-horses, pack-mules, and traps. On the traps were letters that afterward became magical in all the Up-Country—A. F. C.—American Fur Company. Leading these men were Vanderburgh, who had already become a successful trader among the Aricaras and had to his credit one victory over the Blackfeet; and Drips, who had been a member of the old Missouri Fur Company and knew the Upper Platte well. But the Rocky Mountain men, who knew the cost of life and time and money it had taken to learn the hunting-grounds of the Rockies, doubtless smiled at these tenderfeet who thought to trap as successfully in the hills as they had on the plains.
Two things counselled caution. Vanderburgh would stop at nothing. Drips had married a native woman of the Platte, whose tribe might know the hunting-grounds as well as the mountaineers. Hunters fraternize in friendship at holidaying; but they no more tell each other secrets than rival editors at a banquet. Mountaineers knowing the field like Bridger who had been to the Columbia with Henry as early as 1822 and had swept over the ranges as far south as the Platte, or Fitzpatrick[33] who had made the Salt Lake region his stamping-ground, might smile at the newcomers; but they took good care to give their rivals the slip when hunters left the rendezvous for the hills.
When the mountaineers scattered, Fitzpatrick led his brigade to the region between the Black Hills on the east and the Bighorn Mountains on the west. The first snowfall was powdering the hills. Beaver were beginning to house up for the winter. Big game was moving down to the valley. The hunters had pitched a central camp on the banks of Powder River, gathered in the supply of winter meat, and dispersed in pairs to trap all through the valley.
But forest rangers like Vanderburgh and Drips were not to be so easily foiled. Every axe-mark on windfall, every camp-fire, every footprint in the spongy mould, told which way the mountaineers had gone. Fitzpatrick's hunters wakened one morning to find traps marked A. F. C. beside their own in the valley. The trick was too plain to be misunderstood. The American Fur Company might not know the hunting-grounds of the Rockies, but they were deliberately dogging the mountaineers to their secret retreats.
Armed conflict would only bring ruin in lawsuits.
Gathering his hunters together under cover of snowfall or night, Fitzpatrick broke camp, slipped stealthily out of the valley, over the Bighorn range, across the Bighorn River, now almost impassable in winter, into the pathless foldings of the Wind River Mountains, with their rampart walls and endless snowfields, westward to Snake River Valley, three hundred miles away from the spies. Instead of trapping from east to west, as he had intended to do so that the return to the rendezvous would lead past the caches, Fitzpatrick thought to baffle the spies by trapping from west to east.