Illinois Archaeology

Fever River Research 

PO Box 5234

Springfield, Illinois




Floyd Mansberger, Director of Fever River Research, received his bachelor's degree from the University of Illinois (1977, Anthropology) and his master's degree from Illinois State University (1981, History).  Over the past nearly 40 years, Mansberger has participated in a variety of cultural resource management projects such as archaeological and architectural surveys, archaeological excavations, and archival research as well as preparing historic structure reports for historic buildings.  Mansberger has published articles on his research in such journals as Illinois ArchaeologyTransactions of the Pioneer America SocietyHistoric IllinoisWisconsin ArchaeologistAgricultural HistoryJournal of the Illinois Geographical Society, and Western Illinois Regional Studies.  Mansberger can be contacted at

Christopher L. Stratton, Research Historian, Archaeologist and Architectural Historian, began his career with Fever River Research in 1993. A graduate of Knox College in Galesburg, Illinois, he received a bachelor's degree (1993) in History.  Stratton has a strong knowledge of vernacular architectural history, material culture studies, political history, and American studies in general.  Prior to graduation, he participated in a study-abroad program, spending a year in Athens, Greece, where he developed an interest in Byzantine Studies.  Christopher lives in Waterloo, Illinois with his three children.  Stratton can be contacted email at

Chelsea P. Coates, Archaeologist, is a recent addition to Fever River Research as of August 2019.  She received her bachelor’s degree in Anthropology (2011) and completed coursework for a Master’s in Historical Archaeology (2014) at the University of Tennessee Knoxville.  She received her master’s degree in CRM through Adams State University (Colorado) in September 2021.  Chelsea has extensive experience in prehistoric and historic archaeological survey in all phases, laboratory analysis, and archival research.  Chelsea has a strong interest in historical ceramics and consumption.  She spends her time when not doing archaeology playing harp professionally and visiting family.  Chelsea can be contacted at