a “midland point,” a type of Indian arrowhead; and a “hell gap knife,” an Indian knife resembling a large arrowhead. Knowlton sold the pipe for $750 and the knives for $3,000 each ...

For an hour, he tapped, whacked and smoothed the hard rock until it was transformed into a delicate and potentially deadly artifact: a replica of an Indian arrowhead known as a Dalton point.