Andover Historical Society: http://andoverconnecticut.homestead.com/HistoricalSociety.html
Ashford Historical Society: https://ashfordtownhall.org/directory/ashford-historical-society/
Bolton Historical Society: https://www.boltoncthistory.org/
Columbia Historical Society: http://columbia-history.org/
Connecticut Historical Society: https://chs.org/
Connecticut League of History Organizations: https://clho.org/
Connecticut SHPO: https://portal.ct.gov/DECD/Services/Historic-Preservation
Coventry Historical Society: https://ctcoventryhistoricalsociety.dreamhosters.com/
East Windsor Historical Society: https://eastwindsorhistory.com/
Ellington Historical Society: https://www.ellingtonhistsoc.org/
Enfield Historical Society: https://www.enfieldhistoricalsociety.org/
Farmington Historical Society: http://fhs-ct.org/
Glastonbury Historical Society: https://www.hsgct.org/
Hebron Historical Society: https://hebronhistoricalsociety.org/
Manchester Historical Society: http://www.manchesterhistory.org/MHS3_Home.html
Marlborough Historical Society: https://marlboroughhistory.org/
Pomfret Historical Society: https://pomfret-historical-society.org/
Preservation Connecticut: https://preservationct.org/
Somers Historical Society: http://www.somershistoricalsoc.org/
South Windsor Historical Society: http://southwindsorhistory.org/wordpress/
Stafford Historical Society: https://www.facebook.com/StaffordCTHistoricalSociety/
Suffield Historical Society: http://www.suffieldhistoricalsociety.org/
Tolland Historical Society: http://tollandhistorical.org/
Union Historical Society: http://www.unioncthistoricalsociety.org/index.html
Vernon Historical Society: https://vernonhistoricalsoc.org/
Wethersfield Historical Society: https://www.wethersfieldhistory.org/
Willington Historical Society: https://willingtonhistoricalsocietyct.org/
Willimantic Historical Society and the Jillson House Museum: https://windhamhistoricalsociety.org/
Windham Textile and History Museum: https://millmuseum.org/
Wood Memorial Library: https://woodmemoriallibrary.org/
Woodstock Historical Society: https://www.centerforwoodstockhistory.com/