Animas-La Plata Project Volume IV(2ndEdition) Ridges Basin Excavations: Eastern Basin Sites (Animas-La Plata Project; Swca Anthropological Research Paper) by Thomas D. Yoder, James M. Potter Paperback, 422 Pages, Published 2008 by Swca, Inc. ISBN-13: 978-1-931901-18-5, ISBN: 1-931901-18-X