Naturalization Records aft. 1906 USCIS (formerly INS) files, known as C-Files, include a duplicate copy of all naturalization records dated after September 26, 1906. All C-Files contain at least a copy of the Declaration of Intention to become a US Citizen (to 1952), Petition for Naturalization, and Certificate of Naturalization. Occasional files contain additional documents or correspondence. C-Files include all US naturalizations from all States and Territories, and from all courts (Federal, State, and local). INS maintains an index to the C-Files, and can retrieve individual records based on name, date of birth, and place of birth. C-Files from 1906 to 1956 have been microfilmed, and are available via Freedom of Information/Privacy Act request to INS Headquarters in Washington, DC Information about making a request is found here: http://uscis.gov/graphics/aboutus/foia/request.htm Happy hunting, Helen (DCGS)