By Estela A. Gavosto (University of Kansas), Steven G. Krantz (Washington University, St Louis), William McCallum (University of Arizona)
By Ruth Iyob (University of Missouri, St Louis)
By Judith A. Byfield (Cornell University, New York), Carolyn A. Brown, Timothy Parsons (Washington University, St Louis), Ahmad Alawad Sikainga (Ohio State University)
By Douglass C. North (Washington University, St Louis)