Illinois joined the Union in 1818 and McDonough County was set off in 1826. William Carter and Riggs Pennington (who soon moved on) are credited with being the first settlers. By 1830, several others had settled in the area and a semblance of government was begun. By the 1840s, a newspaper and a railroad were in progress. With the outbreak of the Civil War, McDonough County sent her share of soldiers; over thirty pages of rosters are included.

This publication dives extensively into the history of McDonough County, Illinois. The county's past is explored from the earliest settlers to established cities, including the development of the county government, the rise of education, and the influence of religion. Additionally, the history of railroads, early newspapers, and industry are detailed in this publication, providing an in-depth look at the county's growth. This book also includes personal accounts of life in McDonough County, featuring stories from original settlers. Over 150 pages are devoted to biographical sketches of important men. The political scene (including rosters of officials from 1830-1876), the educational system, and various religious sects are also covered. Several towns get chapters of their own and a business directory for each is given: Macomb, Blandinsville, Doddsville, Middletown, Prairie City, Bushnell, Bardolph, Colchester, Sciota, and a few others with brief information. This extensive work also covers: the division of the county into townships; geology; temperance; the Underground Railroad; the Bar; and more. A surname index adds to the value of this work.