Hamilton Co Historical Society

McCoy Library - with genealogy dept.

McCoy Library Museum

The Yesterdays Of Hamilton Co

Hamilton Co on USGenWeb

Southern IL Photo Exchange

Hamilton Co IL Maps

Hamilton Co IL books on Google book search

Hamilton Co IL on Internet Archive

History of Gallatin, Saline, Hamilton, Franklin and Williamson counties, Illinois

Hamilton Co IL on Family Search

The U.S. National Archives and Records Administration

McLeansboro Times Leader Newspaper - with obits

Government Land Office - Hamilton Co IL