Engraving by John McRae after Captain Seth Eastman, US Army, showing a Native American family using a travois, a wooden frame dragged behind a pony or dog, to which possessions are strapped. The horse, travois and sledge were the only forms of land transport as the wheel was unknown before the arrival of Europeans. Illustration from 'Information respecting the history, condition and prospects of the Indian tribes of the United States. Part 2' by Henry Rowe Schoolcraft (1793-1864), published in Philadelphia in 1847.
© Science Museum / Science & Society Picture Library