When I first saw this knife sitting on a display table in Oklahoma, I was surprised to see it was still hafted to the original handle. Many times, broken authentic knives are put into recently made handles as examples of how they appeared in ancient times - this was not the case with this one - it was the real deal. I talked to the owner, and he explained the item was found in a rock bluff in Peco Texas.
Most knives, due to moisture and time, have seen their handles rot away and the only thing remaining are the flint points we collect. Occasionally though, knives were tucked away in dry environment areas out of the weather, and so they are able to remain in-tact. It is a rarity, but it does happen. Normally, these pieces are found in the desert southwest parts of the country, and were recovered back at the turn of the century were such areas were being explored for the first time. Occasionally they were tucked away in boxes and attics, and every once in a while one will surface.