You guys are so lucky to have a history of old artifacts. Where I live, at the end of The Appalachian trail, in north Georgia, we seldom find things from earlier than the early 1800's. This area was Indian territory until 1820's, so stone tools and pottery sherds are our main finds. I know that the term Indian is not the correct nomenclature of the inhabitants here prior to that era but neither is Native Americans as this continent was settled by walk in and float ins from Siberia, no race ever originally here.