These are some more finds from back in the '80's. Local points found surface hunting. Matamoros, Kinney, Catan, Desmuke, and an Angostura thrown in for good measure and to add a little Paleo to the mix.
Brush country, South Tx. Frio county area. I hunt it and LaSalle with a little in Dimmit. Most luck in Frio but these knives are the majority of what we find around here.
Knives in S. Texas from the days when buffalo/deer would be the main course. I'd imagine many thousands of years ago that area was packed with protein on the hoof.