Petroleum County MT Immigration Records

USA (1,403,636) > Montana (10,011) > Petroleum County (57) > Petroleum County Immigration Records (1)

USA (1,403,636) > Montana (10,011) > Montana Immigration Records (192) > Petroleum County Immigration Records (1)

NOTE: Additional records that apply to Petroleum County are also on the Montana Immigration Records page.

Petroleum County Immigration Records

Montana, Federal Naturalization Records, 1870-1999 Ancestry online

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Research Tip

Naturalization documents can list a person's name, age, witnesses, and place of origin. In some cases, women were not required to naturalize separately from their husbands. Before 1906 in the United States, naturalization documents sometimes only listed a home country rather than a specific town or city where a person came from. Since 1906, more detailed information has been included in naturalization documents.

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