Barrington Historic Overlay District:
https://www.barrington-il.gov/government/departments/development_services/historical_preservation_overlay_district/index.php/

Building Codes for the Barrington Area
Building Codes

Chronicling America: Historic American Newspapers:
https://chroniclingamerica.loc.gov/

Digital Research Library of Illinois History:
http://livinghistoryofillinois.com/

DNA and Beyond
DNA Tools

DNA Test Kit Showdown
DNA Test Kit Showdown

Explore Chicago Collections:
https://explore.chicagocollections.org

Family Search:
https://familysearch.org

Find A Grave:
https://www.findagrave.com

Finding Your Military Family: A Guide to Online Databases and Websites
Finding Your Military Family

Cook County, Illinois Vital Records:
https://www.cookcountyclerkil.gov/agency/vital-records

Illinois Digital Archives
Illinois Digital Archives (other historical photos and documents from the area)

Illinois Digital Heritage Hub
https://idhh.dp.la/

Illinois Historical Automobile Licenses
List of Automobile Licenses issued by...Secretary of State of Illinois - Illinois State Library - General Collection - Illinois Digital Archives (idaillinois.org) - 1907

List of Automobile Licenses issued by James A. Rose, Secretary of State of Illinois from July 1, 1910-January 1, 1911 - Illinois State Library - General Collection - Illinois Digital Archives (idaillinois.org) - 1910-1911

List of Automobile Licenses issued by... Secretary of State of Illinois - Illinois State Library - General Collection - Illinois Digital Archives (idaillinois.org) - September, 1911

Illinois State Archives:
https://www.ilsos.gov/departments/archives/home.html

Illinois School Report Card - Barrington:
Illinois School Report Card - Barrington

Lake County IL Genealogical Society:
http://lakecountyilgenealogy.org/

Library of Congress National Screening Room:
https://www.loc.gov/collections/national-screening-room/

Linkpendium Genealogy and Family History:
https://www.linkpendium.com/

National Archives:
https://www.archives.gov/research/genealogy

The Newberry:
http://www.newberry.org/genealogy-and-local-history

Overseas Genealogy: One Site at a Time
Overseas Genealogy

Ports O' Call: Where Your Ancestors Landed
Ports O' Call

Sources for U.S. Genealogy Records
Sources for U.S. Genealogy Records

Tax Rolls for Cook County:
http://www.cookcountypropertyinfo.com/

Tax Rolls for Kane County:
http://www.kanecountyassessments.org/Publications.html
http://kaneil.devnetwedge.com

Tax Rolls for Lake County:
https://www.lakecountyil.gov/388/Assessment-Lists
https://maps.lakecountyil.gov/mapsonline/

Tax Rolls for McHenry County:
https://www.co.mchenry.il.us/county-government/departments-a-i/assessments/assessment-rolls