Mi Chuk from Yosemite! Raining here this am and snow predicted to 6000 feet!
Hafted knives seem to be a thing after European contact. Some earlier knives from california are just pieces of board with different types of blades in them, even bottle glass. There is Obsidian in Yellowstone that could easily have made it down river in trade.
Only thing hafted before that are atlatl darts, arrows and a "sickle/saw" used for cutting vegetation.
I will see what else I can find for you.
ka la bi (see you next time)