I've been playing with the scans of books on Archive.org.
There are a great number of books scanned on this site. There are
five scanned books from Hancock County, Illinois alone and thousands of others. The images on this post are from Thomas Gregg's 1881 History of Hancock County, Illinois, parts of pages 569 and 570 (a biography of James Rampley). I downloaded the entire book as a PDF file and can even do full text searches. This is really neat.
I located quite a few histories of Adams County, Illinois, and will be searching those as well. One can easily spend hours and hours at this site.