Shown are four of the five items collected from the surface of a small lithic workshop site in Sheridan County. The site was discovered by Kansas Historical Society Archeologists in 1990. The artifact on the left is a large flake made from Smoky Hill silicified chalk, all of the others are modified flakes made of Smoky Hill silicified chalk, a chalcedony-like material, and Alibates flint from the Canadian River valley in the Texas panhandle.