Research & Correspondence series includes unpublished materials related to various time periods and research interests. Also included are oversized illustrations, maps, and floor plans related to Cahokia, Steed-Kisker, and Mesoamerica used in publications. Research areas include Mississippian Culture, Prehistoric Native Americans of the Great Plains, Pawnee & Wichita tribes, Mesoamerica, Local History (Manhattan and surrounding communities, and other hobby topics that are non-archaeological.
Rolled items have maps of archeological sites.