Southington

Southington Historical Society
Southington Public Library
Barnes Museum
Historic Southington Newspapers

Regional

Godfrey Library
Connecticut State Library History and Genealogy Unit
Connecticut Historical Society
ResearchITCT.org

Major Genealogy Sites

Ancestry.com
Familysearch.org
HeritageQuest (Free from Researchitct.org with CT Library Card)
Fold3 (free from CTState Library with CSL Card)

Immigration

Ellis Island
Castlegarden.org