Montana's state Sedition Law was similar to that of the United States law of 1917. The Montana Sedition Project acquired pardons for those imprisoned under the Sedition Law in 2006. Included in this site is the list of Montana's Sedition Prisoners along with their scanned prison in-take forms.
Searchable online database from the Washington Secretary of State. Contains extracts from the Record of Penitentiary Convicts of more than 3,000 inmates housed in the Walla Walla State Penitentiary from 1887-1904.