Acknowledgments

We thank the Authority for Research and Conservation of Cultural Heritage, the Ministry of Culture and Sport Affairs, Ethiopia, particularly A. Jara, for permission to conduct our ongoing research in the Blue Nile Basin, the Director and staff of the National Museum, Addis Ababa, for their assistance with collections, and the Gondar ARCCH for logistical support. In addition, the authors are grateful to the help provided with the fieldwork by G. Ayele, Y. Desta, Y. Sitotaw, A. Abedom, T. Desta, M. Mekonnen, H. Habtemichael, and. E. Addissu. The project was funded by grants from the National Science Foundation EAR-0240251 and EAR-0617306, the National Geographic Society, and the Downey Family Award for Faculty Excellence to BFJ and NT. Funds for this project also came from the National Science Foundation EAR-000 1259 to BFJ and NT the Jacob and Frances Sanger Mossiker Chair in the Humanities, the University Research Institute of the University of Texas at Austin, and the Institute for the Study of Earth and Man (to JLGM). One of the authors (JLGM) wishes to dedicate this paper to Lena Marie Echelle.