The name of this young Missouri man, Mahinkacha ("Maker of Knives"), is inscribed on the reverse of the drawing. On May 16, 1834, while at Joseph Roubidoux's trading post above Cantonment Leavenworth, Maximilian observed that many of the Missouri, Oto and Iowa Indians gathered at the post were wearing thick undles of "wampum" through holes pierced in their ears.