Wampum the spoken language is. Records and treaties are kept in this manner, and individuals could write letters to one another in this way. Wampum belts were used as a memory aid in oral tradition, and were sometimes used as badges of office or as ceremonial devices in Indian culture such as the Iroquois. The 1820 New Monthly Magazine reports on a speech given by chief Tecumseh in which he vehemently gesticulated to a belt, pointing out treaties made 20 years earlier and battles fought since then. The National Museum of the American Indian repatriated eleven wampum belts to "Iroquois" chiefs
Wampum also transfer personal history, and previous obligations of the deceased, e.g., the successor of a person killed in war may be obligated to avenge the death of the names previous holder, or care for the deceased persons family as their own. ... the Iroquoians (Five Nations and Huron alike) shared a very particular constitution: they saw their societies not as a collection of living individuals but as a collection of eternal names, which over the course of times passed from one individual holder to another. Just as the wampum enabled the continuation of names and the histories of persons, the