Boas and Goddard (1924) contains almost all of the known
Tsetsaut material, recorded by Boas in 1894. The language is believed to have
been extinct for decades but the exact date of extinction is not known.
One speaker was still alive in 1927.
A few words remembered by Gitanyow elders are mentioned
in Sterritt et al. (1998).
Boas, Franz and Pliny Earle Goddard (1924)
``Ts'ets'aut, an Athapascan language from Portland Canal,
International Journal of American Linguistics3.1.1-35.
Sterritt, Neil J., Susan Marsden, Robert Galois, Peter R. Grant, and
Richard Overstall (1998)
Tribal Boundaries in the Nass Watershed.
Vancouver: University of British Columbia Press.