"[...]exploit intensively the drainages of the Wind River and the upper Snake and Green rivers. The Rocky Mountain Company established a new pattern of trading. Eschewing the rigid and
hierarchical organization of the British companies, it relied mainly upon the services of free trappers, who gathered once a year at agreed places to meet the company’s supply trains. These
gatherings, the famous trappers’ rendezvous, were held in the summer at various places in Shoshone country—Pierre’s Hole, Cache Valley, or the Green River. The trappers of the Rocky Mountain
Company and later of the American Fur Company invested every[...]".
