Search offsite online records:

• Cook County government website
• Cook County Circuit Court online search
• Chicago Genealogical Society
• History of the Cook County Courthouses
• Bureau of Land Management Records
• Familysearch.org

Records in the Illinois State Archives

• Illinois Servitude and Emancipation Records
• Public Domain Land Tract Sales Database
• Physicians Database

Databases of Illinois Veterans

• 1929 Illinois Roll of Honor
• Illinois Black Hawk War Veterans
• Illinois Civil War Muster and Descriptive Rolls
• Illinois Civil War Veterans of Missouri Units
• Illinois Civil War Veterans Serving in the U.S. Navy
• Illinois Mexican War Veterans
• Illinois Soldiers' and Sailors' Home Residents
• Illinois Spanish-American War Veterans
• Illinois Veterans' History Project
• Illinois War of 1812 Veterans
• Illinois Winnebago War Veterans

Illinois Statewide Vital Records Databases

• Illinois Statewide Death Index (1916-1950)  An index created by the Illinois Department of Public Health
• Illinois Statewide Death Index, Pre-1916
  An Ongoing Project of the Illinois State Archives
• Illinois Statewide Marriage Index, 1763-1900
  An Ongoing Project of the Illinois State Archives & the Illinois State Genealogical Society