Black binder cover with preliminary “Report of Study-Peoria Lake” inside. The label on the front reads: “State of Illinois/ Report of Study – Peoria Lake/ Tazewell, County.” The report chronicles the findings from an investigation of a section of Peoria Lake. Someone had asked permission to fill in this part of the lake, launching opposition to the task and an investigation followed. The report of the investigation includes plat surveys, township maps, certificates of registration of land sales, and deed records showing who owned that section of the lake. Some of the maps fold out.