Michael D. Glascock, PhD, is a senior research scientist and group leader at the University of Missouri Research Reactor Center.

• Introduction: Geochemical Evidence for Long-Distance Exchange by Michael D. Glascock Indigena Ware: Spain to Valley of Mexico by Enrique Rodriquez-Alegria The Emergence of market Economies in the Ancient Maya World: Obsidian Exchange in Terminal Classic Yucatan, Mexico by Geoffrey E. Braswell and Michael D. Glascock More than Exchange: Pre-Ceramic through Ceramic Period Obsidian Studies in the Greater North American Southwest by M. Steven Shackley Archaeological Evidence for the Long-Distance Exchange of Caddo Indian Ceramics in the Southern Plains, Midwest, and Southeastern United States by Timothy K. Perttula Production and Long-Distance Movement of Chupadero Black-on-White Pottery in New Mexico and Texas by Darrell G. Creel, Tiffany C. Clark, and Hector Neff Exploring the Landscapes of Long-Distance Exchange: Evidence from Obsidian Cliffs and Devils Tower, Wyoming by Brian Leigh Molyneaux From Loess Plains to High Plains: The Westward Movement of Upper Republican Pots by Anne M. Cobry and Donna C. Roper Long-Distance Obsidian Traffic in Northwestern Argentina by Hugo D. Yacobaccio, Patricia S. Escola, Marisa Lazzari, and Fernando X. Pereyra A Geochemical Vector for Trade: Cyprus, Asia Minor, and the Roman East by Danielle A. Parks and Hector Neff XRF Analysis of Pottery from Mutokolwe, a Khami Settlement from the Soutpansberg Mountains, South Africa by Leon Jacobson, Warren S. Fish, and Willem A. van der Westhuizen Yapese Prestige Goods: The INAA Evidence for an Asian Dragon Jar by Christophe Descantes, Hector Neff, and Michael D. Glascock Centrality and the Collapse of Long-Distance Voyaging in East Polynesia by Marshall I. Weisler Index About the Editor and Contributors