The naturalization records of Pembina County include Declaration of Intention, Naturalization Records and Petition and Record documents. Declaration of Intention (first papers) contain name, place and date of person wishing to become a citizen. Naturalization Records (second papers) which grant citizenship contain name of applicant, country of origin, and date records were supplied. In 1906, the form was renamed "Petition and Record" and required greater detail in family and personal history.

An index to the North Dakota Naturalization Records is available here:

http://library.ndsu.edu/db/naturalization/