Brooks, H. Allen. The Prairie School: Frank Lloyd Wright and his Midwest Contemporaries. IL002

Chapman, Mrs. P. T. A History of Johnson County, Illinois with maps and illustrations. Sponsored by the Johnson County Historical Society, Vienna, Illinois. Published by McDowell Publications, Utica, KY. IL004

History of Pike County, Illinois: together with sketches of its cities, villages and townships, educational, religious, civil, military, and political history portraits of prominent persons and biographies of representative citizens. History of Illinois, embracing accounts of the pre-historic races, aborigines, French, English and American conquests, and a general review of its civil, political and military history, Digest of State Laws. Chas. C. Chapman & Co., 1880. IL003

Sangamon County Genealogcal Society. Early Federal Land Sales (within the Present Boundaries of Sangamon county, Illinois). Author, P.O. Box 1829, Springfield, Illinois. IL001