- U.S., Internal Revenue Assessment Lists, 1862-1874 - Images only; Images of Internal Revenue assessment lists (annual, monthly, and special) for the Territory of Montana, 1864-1872.
- Montana, Cascade County Records, 1880-2009 - Images only; the county poll tax index, 1891-1898, and Great Falls tax lists for the years 1889, and 1891-1895, are included.
- U.S. IRS Tax Assessment Lists, 1862-1918 - ($); This collection includes annual, monthly and special assessment lists.
Taxation records are listed in the Place Search of the FamilySearch Catalog under:
- MONTANA - TAXATION
- MONTANA, [COUNTY] - TAXATION