http://www.lib.ndsu.nodak.edu/ndirs/databases/naturalrec.php
NORTH DAKOTA NATURALIZATION RECORDS INDEX
Name - Country of Origin* - Date - Papers - County
CAVE, David - Canada - August 29, 1883 - 1st - Pembina
CAVE, David - Canada - June 14, 1887 - 1st - Cavalier
CAVE, Francis - Canada - May 18, 1888 - 1st - Cavalier
CAVE, Francis - Canada - December 14, 1897 - 2nd - Cavalier
CAVE, James Wellsley - Canada - December 20, 1907 - 1st - Williams
CAVE, John Thomas - England - June 04, 1881 - 1st - Stutsman
CAVE, John Thomas - England - April 23, 1888 - 2nd - Stutsman
CAVE, Thomas - England - June 23, 1902 - 1st - Bottineau
CAVE, Thomas B.- England - March 09, 1910 - 1st - Towner
* Country of origin may not be country of birth.
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http://www.and.lib.in.us/cemetery/naturalization.asp#submit
INDIANA NATURALIZATION RECORDS
CAVE, John - England - 10/20/1900
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http://www.sampubco.com/nats/ma/usboston-pets-v03.htm#back
BOSTON, MASSACHUSETTS - Naturalization Petitions Index
CAVE, George Harold - bp: ENGLAND - date 1909/1910
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