Conducting historical or genealogical research in Old Lyme can be very rewarding, as there are many resources available throughout the area. Lyme was originally part of the Saybrook Colony until the "Loving Parting" in 1665. East Lyme separated from Lyme in 1839, and in 1854-1855 Lyme and Old Lyme became separate towns. Because of this shared history, records are held by various institutions throughout "The Lymes".

The Old Lyme Historical Society Archive is currently under construction/ reorganization. The archive will be made available to the public by appointment, once all materials have been assimilated and indexed. Collections include artifacts, postcards and letters mainly dating from the mid-19th century to the present.

Cemeteries of Old Lyme

The Old Lyme-Phoebe Griffin Noyes Library's Old Lyme Room houses a collection of genealogical texts and other materials that document the economic, natural, political, and social history of Old Lyme. The basis of the collection is a large number of genealogy books donated by Evelyn MacCurdy Salisbury at the founding of the Library.

The Lyme Historical Society/ Florence Griswold Museum has significant holdings of original documents, letters, photographs, deeds, mercantile and business records, artists' scrapbooks, and accounts of events that took place in Lyme and Old Lyme.

The Lyme Public Hall Association/Lyme Local History Archives collects, preserves and makes materials accessible to the public about the history and heritage of Lyme (cultural, political, social, economic) from its earliest Colonial period in the 17th century to the present.

Old Saybrook Historical Society The Stevenson Archives and Library contains books, maps, ledgers, diaries, documents, photographs, mid-20th century newsreels, genealogical material, cemetery records, family papers and histories, log books, architectural histories, Native American material and children's books on history.

East Lyme Historical Society has a collection of materials related to East Lyme historic sites and family histories.

Connecticut Historical Society

CT Humanities

Connecticut State Library

Indian and Colonial Research Center

The Norwich Historical Society