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This entry was originally written by Alice Eichholz, Ph.D., CG, in Red Book: American State, County, and Town Sources.
As with other states, naturalizations might have been granted in any Connecticut court up to the twentieth century. Some are still in the county courthouses, but all that were held at the Connecticut State Library were transferred to the National Archives—Northeast Region in 1984 and have been microfilmed with a copy of the film returned for research at the state library. Those filed and granted after 1906 are in the federal district court in Bridgeport, Hartford, or New Haven. See www.cslib.org/natural.htm for a full description and explanation.