Fork of the Saskatchewan and Close to the foot hills of the Rockies. At that time the Company had but recently entered Blackfeet territory, and none of its on gagés understood their language; an interpreter was needed, and the Factor appointed Monroe to fit himself for the position. The Blackfeet were leaving the Fort to hunt and trap along the tributaries of the Missouri during the winter, and he went with them, under the protection of the head Chief, who had nineteen wives and two lodges and an immense band of horses. By easy stages they traveled along the foot of the Rockies to Sun River, where they wintered, and then in the spring, instead of returning to the Saskatche wan, they crossed the Missouri, hunted in the Yellowstone country that summer, wintered on the Missouri at the mouth of the Marias River, and returned to Mountain Fort the following Spring with all the furs their horses could Carry.