“The Blackfeet and the Crows, like the Sioux and Assinneboins, have nearly the same mode of constructing their wigwam or lodge . . . These lodges, or tents, are taken down in a few minutes . . . when they wish to change their location, and easily transported to any part of the country where they wish to encamp; and they generally move some six or eight times in the course of the summer; following the immense herds of buffaloes, as they range over these vast plains, from east to west, and north to south. The objects for which they do this are two-fold,---to procure and dress their skins, which are brought in, in the fall and winter, and sold to the Fur Company, for white man's luxury; and also for the purpose of killing and drying buffalo meat, which they bring in from their hunts, packed on their horses' backs, in great quantities; making pemican, and preserving the marrow-fat for their winter quarters.” George Catlin painted this scene in 1832, during a voyage along the Missouri River. (Catlin, Letters and Notes, vol. 1, no. 7, 1841; reprint 1973)