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Ancestry.com - Montana, County Naturalization Records, 1867-1970 $

Original source: Montana County Naturalization Records, 1867-1970. Montana State Historical Society, Helena, Montana. Ancestry.com has searchable indexes; database results and some digitized images are available with a fee-based subscription. Free articles and helpful research materials.

Ancestry.com - Montana, Federal Naturalization Records, 1870-1999 $

Original source: Naturalization Records From U.S. District Courts. Records of District Courts of the United States, Record Group 21. The National Archives at Denver, Broomfield, Colorado. Ancestry.com has searchable indexes; database results and some digitized images are available with a fee-based subscription. Free articles and helpful research materials.

Ancestry.com - Search Immigration & Travel

Passenger lists, citizenship, naturalization, and other immigration sources. Ancestry.com has searchable indexes; database results and some digitized images are available with a fee-based subscription. Free articles and helpful research materials.

SAMPUBCO, Montana Naturalization Indexes, Probates

Indexes for: Wills and Heirs, Surrogate's Records / Probate / Estate Files, Guardianships, Naturalizations, Miscellaneous Orders and Decrees, Letters of Administration, Letters Testamentary, Petitions for Administration, Proofs of Wills, Cemetery Burials, Renunications, Biographies. You can order copies of the original source documents for a small fee. This service pertains only to entries found in the indexes on this web site.