They are now classed as Chinookan.
"Indian Linguistic Families Of America, North Of Mexico" by John Wesley Powell
The Chinookan linguistic family includes a number of separate tribes.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2" by Various
Ginny Frosh and Ted Durgan unveil one of three new interpretive panels honoring the Chinookan people Thursday at the Parkersville National Historic Site.
Near Portland, Oregon, archaeologists and Indians have built an authentic Chinookan plankhouse like those Lewis and Clark saw.