Wampum at the Onondaga Longhouse Six Nations Reserve in New York. These belts dated to the late 18th century and are sacred to the Longhouse religion. They had been away from their tribes for over a century. The Seneca Nation commissioned replicas of five historic wampum belts completed in 2008. Artists continue to weave belts of a historical nature, as well as designing new belts based on their own concepts. Wampum Wampum is a traditional shell bead of the Eastern Woodlands tribes of American Indians. It includes the white shell beads fashioned from the North Atlantic channeled whelk shell and the
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