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The National Archives has immigration records for arrivals to the United States from foreign ports between approximately 1820 and December 1982 (with gaps). The records are arranged by port or airport of arrival.
Discover more about Immigrant Records at the National Archives by visiting our webpage: https://www.archives.gov/research/immigration
Passenger arrival and departure records dated post 1957 were filmed by the Immigration and Naturalization Service (INS) and the original paper records were not retained. The accessioned microfilm reels now in the custody of the National Archives are the record copies of the original paper records which no longer exist. Unfortunately, due to the fragile nature of the original camera negative film, access to the microfilm is limited until it can be transferred to a more suitable format. The National Archives is in the process of transferring the microfilm to a digital format, and all digitized copies will eventually be available online.
Arrival records are restricted due to personally identifiable information for 50 years, and must be requested through a Freedom of Information Act (FOIA) (https://www.archives.gov/foia) request during the restricted period.
Records older than 50 years are publicly available, and many have been digitized by National Archives partners including Ancestry.com and FamilySearch.org.
Manifests for arrivals December 1982 and after are held by the US Citizenship and Immigration Services (USCIS). Additionally, all immigrants admitted since May 1, 1951 should be entirely documented in an Alien File (A-File). The USCIS manifest arrivals and A-Files are available through the USCIS Freedom of Information Act Program (FOIA): https://www.uscis.gov/g-639. The form must be submitted to the USCIS address listed under the “Where to File” tab.
We also recommend contacting the National Archives at Boston to get more information on immigration to Connecticut.
We hope this information is helpful in beginning your research.
The National Archives and Records Administration