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Record Name
New York, U.S., State and Federal Naturalization Records, 1794-1943	45
Rio de Janeiro, Brazil, Immigration Cards, 1900-1965	45
Pennsylvania, U.S., Federal Naturalization Records, 1795-1945	41
Florida, U.S., Naturalization Records, 1847-1995	38
California, U.S., Federal Naturalization Records, 1888-1991	36
Illinois, U.S., Federal Naturalization Records, 1856-1991	32
U.S., Naturalization Record Indexes, 1791-1992 (Indexed in World Archives Project)	28
U.S., Naturalization Records Indexes, 1794-1995	22
Alsace-Lorraine, Germany, French Citizenship Declarations (Optants), 1872	20
U.S., Naturalization Records, 1840-1957	17
Ohio, U.S., County Naturalization Records, 1800-1977	15
New York, U.S., Index to Petitions for Naturalization filed in New York City, 1792-1989	11
U.S., Index to Alien Case Files,1944-2003	10
Massachusetts, U.S., State and Federal Naturalization Records, 1798-1950	8
New York, U.S., Naturalization Records, 1882-1944	8
Belgium, Antwerp Police Immigration Index, 1840-1930	7
North Dakota, U.S., Naturalizations, 1873-1952	6
Maine, U.S., Federal Naturalization Records, 1787-1991	4
New Hampshire, U.S., State and Federal Naturalization Records, 1832-1995	4
Washington, U.S., Petitions for Naturalization, 1860-1991	4