These obsidian flakes were recovered from an archeological site in Rice County during the 1981 Kansas Archeology Training Program field school. In 2005, they were analyzed using X-ray florescence (XRF), an elemental analysis that matches the composition of the artifact to the composition of known sources. Two pieces were determined to be Valles Rhyolite from the Cerro del Medio member and the other to be Cerro Toledo Rhyolite from the Obsidian Ridge member, both places found in the Jemez Mountains in New Mexico. Thus XRF studies help archeologists to learn about ancient trade patterns. The site was a small Great Bend aspect, Little River focus grass-covered pit house that included an entryway, storage pits, post molds and a hearth. The people that inhabited Great Bend aspect sites are ancestral to the Wichita and Affiliated Tribes.