Having wintered on the Snake, he moved gradually up-stream. Crossing southward over a divide, they unexpectedly came on the very rivals whom they were avoiding, Vanderburgh and Drips, evidently working northward on the mountaineers' trail. By a quick reverse they swept back north in time for the summer rendezvous at Pierre's Hole.
Who had told Vanderburgh and Drips that the mountaineers were to meet at Pierre's Hole in 1832? Possibly Indians and fur trappers who had been notified to come down to Pierre's Hole by the Rocky Mountain men; possibly, too, paid spies in the employment of the American Fur Company.
Before supplies had come up from St. Louis for the mountaineers Vanderburgh and Drips were at the rendezvous. Neither of the rivals could flee away to the mountains till the supplies came. Could the mountaineers but get away first, Vanderburgh and Drips could no longer dog a fresh trail. Fitzpatrick at once set out with all speed to hasten the coming convoy. Four hundred miles eastward he met the supplies, explained the need to hasten provisions, and with one swift horse under him and another swift one as a relay, galloped back to the rendezvous.
But the Blackfeet were ever on guard at the mountain passes like cats at a mouse-hole. Fitzpatrick had ridden into a band of hostiles before he knew the danger. Vaulting to the saddle of the fresh horse, he fled to the hills, where he lay concealed for three days. Then he ventured out. The Indians still guarded the passes. They must have come upon him at a night camp when his horse was picketed, for Fitzpatrick escaped to the defiles of the mountains with nothing but the clothes on his back and a single ball in his rifle. By creeping from shelter to shelter of rugged declivities where the Indian ponies could not follow, he at last got across the divide, living wholly on roots and berries. Swimming one of the swollen mountain rivers, he lost his rifle. Hatless—for his hat had been cut up to bind his bleeding feet and protect them from the rocks—and starving, he at last fell in with some Iroquois hunters also bound for the rendezvous.
The convoy under Sublette had already arrived at Pierre's Hole.
The famous battle between white men and hostile Blackfeet at Pierre's Hole, which is told elsewhere, does not concern the story of rivalry between mountaineers and the American Fur Company. The Rocky Mountain men now realized that the magical A. F. C. was a rival to be feared and not to be lightly shaken. Some overtures were made by the mountaineers for an equal division of the hunting-ground between the two great companies. These Vanderburgh and Drips rejected with the scorn of utter confidence. Meanwhile provisions had not come for the American Fur Company. The mountaineers not only captured all trade with the friendly Indians, but in spite of the delay from the fight with the Blackfeet got away to their hunting-grounds two weeks in advance of the American Company.
What the Rocky Mountain men decided when the American Company rejected the offer to divide the hunting-ground can only be inferred from what was done.
Vanderburgh and Drips knew that Fitzpatrick and Bridger had led a picked body of horsemen northward from Pierre's Hole.
If the mountaineers had gone east of the lofty Tetons, their hunting-ground would be somewhere between the Yellowstone and the Bighorn. If they had gone south, one could guess they would round-up somewhere about Salt Lake where the Hudson's Bay[34] had been so often "relieved" of their furs by the mountaineers. If they had gone west, their destination must be on the Columbia or the Snake. If they went north, they would trap on the Three Forks of the Upper Missouri.
Therefore Vanderburgh and Drips cached all impedimenta that might hamper swift marching, smiled to themselves, and headed their horses for the Three Forks of the Missouri.