I don't know if this book is available for purchase, but you should find the book in any large genealogical library. I understand that the Illinois State Historical Library has this book in Springfield, Ill. It may be available on inter-library loan of even from the LDS (see microfilm version below). The History of Gallatin, Saline, Hamilton, Franklin and Williamson Counties, Illinois was reprinted by Unigraphic, Inc. in 1976. There is also a series of Microfilms printed by Research Republicans, Inc. of New Haven, Ct. This book is found on their microfilm Reel No. 25.