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
Karl Shell the overlapping generations literature (and was perhaps the first to refer to the overlapping generations model by its modern name). The overlapping generations model is now a workhorse in modern macroeconomics and monetary economics. Karl Shell is also co-inventor (with David Cass) of the concept of sunspot equilibrium (and sunspots). Karl Shell Karl Shell (born May 10, 1938) is an American theoretical economist, specializing in macroeconomics and monetary economics. Shell received an A.B. in mathematics from Princeton University in 1960. He earned his Ph.D. in economics in 1965 at Stanford University, where he studied under Nobel Prize in Economics winner