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Record Name
Illinois, U.S., Federal Naturalization Records, 1856-1991	75
U.S., Naturalization Record Indexes, 1791-1992 (Indexed in World Archives Project)	56
New York, U.S., State and Federal Naturalization Records, 1794-1943	52
U.S., Naturalization Records, 1840-1957	48
California, U.S., Federal Naturalization Records, 1888-1991	40
Alsace-Lorraine, Germany, French Citizenship Declarations (Optants), 1872	29
New York, U.S., Index to Petitions for Naturalization filed in New York City, 1792-1989	25
U.S., Naturalization Records Indexes, 1794-1995	25
Ohio, U.S., Naturalization Petition and Record Books, 1888-1946	23
Florida, U.S., Naturalization Records, 1847-1995	20
Halle, Germany, Census and Citizen Lists, 1400-1915	19
Massachusetts, U.S., State and Federal Naturalization Records, 1798-1950	18
Rio de Janeiro, Brazil, Immigration Cards, 1900-1965	18
New York, U.S., Naturalization Records, 1882-1944	17
Pennsylvania, U.S., Federal Naturalization Records, 1795-1945	16
Web: Minnesota, U.S., Naturalization Index, 1849-1985	12
Rhode Island, U.S., State and Federal Naturalization Records, 1802-1945	9
Washington, U.S., Petitions for Naturalization, 1860-1991	9
Ohio, U.S., County Naturalization Records, 1800-1977	8
U.S., Applications for Seaman's Protection Certificates, 1916-1940	6