Blackfoot
Blackfoot (Siksika ) Wikipedia
Blackfoot (Siksika ) native-languages.org
A Concise Blackfoot Grammar (1978) by Uhlenbeck, C.C. . Archive.org
The Blackfoot language (1896) by Maclean, John, 1851-1928 . Archive.org
The adverbial and prepositional prefixes in Blackfoot (1917) by Geers, Gerardus Johannes . Archive.org
Mythology of the Blackfoot Indians (1908) by Wissler, Clark, 1870-1947; Duvall, D. C. .Archive.org
A new series of Blackfoot texts from the southern Peigans Blackfoot Reservation, Teton County, Montana, with the help of Joseph Tatsey, collected and pub. with an English translation (1912) by Uhlenbeck, C. C. (Christianus Cornelius), 1866-1951 . Archive.org