] 
(1998). The Aconcahua Obsidian Source and its Relation to south-central Andean Exchange Systems.
38th Annual Meeting of the Institute of Andean Studies.
(1977). The Altiplano Mode of Economic Integration in the Andes.
Presented at the American Anthropological Association.
(2006). Approaches for understanding flake production in the African Acheulian.
71st Annual Meeting of the Society for American Archaeology. Abstract
(1996). Archaic Period Settlement on the Altiplano: Comparison of Two Recent Surveys in the Southwestern Lake Titicaca Basin.
Conference of Andean and Amazonian Archaeology and Ethnohistory.
(2005). The Central Andes in Peru: ‘Old’ valleys in a ‘young’ mountain range?.
6th International Symposium on Andean Geodynamics (ISAG 2005). 726-729. Abstract
(2002). Domestic architecture from the Late Archaic south-central Andean site of Jiskairumoko.
Society for American Archaeology, 67th. 1-21. Abstract
(1956). The Education of a Geographer.
Presidential address given by the Honorary President of the Association of American Geographers at its 52nd annual meeting, April 4, 1956.
(2001). Incatunahuiri: A Case for Early Socio-Political Complexity in the Titicaca Basin.
66th Annual Meeting of the Society for American Archaeology.
(1997). Jiskairumoko and Early Sedentary Settlement in the southwestern Lake Titicaca Basin.
37th Annual Meeting of the Institute for Andean Studies.
(1998). Kaillachuro: A Formative Mortuary Complex from the southwestern Lake Titicaca Basin.
39th Annual Meeting of the Institute for Andean Studies.
(2006). Levels of theory and social practice in the Reduction Sequence and Chaîne Opératoire methods of lithic analysis.
71st Annual Meeting of the Society for American Archaeology. Abstract
(2004). Preceramic Utilization of the Alca Obsidian Source: Recent Results.
Northeast Conference on Andean Archaeology and Ethnohistory.
(1999). Quelcatani's Place in the Andean Past: A summary.
64th Annual Meeting of the Society for American Archaeology.
(2006). Lithics and land-use: Using projectile points to assess Preceramic settlement patterns in the Peruvian Altiplano.
Society for American Archaeology.
(1997). A 3500 14C Year High-Resolution Record of Water-Level Changes in Lake Titicaca, Bolivia/Peru.
Quaternary Research. 47, 169-180. Abstract
(1904). Aboriginal Trephining in Bolivia.
American Anthropologist. 6, 440-446.
(1975). Adaptive strategies in alpine environments: Beyond ecological particularism.
American Ethnologist. 2, 535-51.
(1998). The Alca Obsidian Source: The origin of raw material for Cuzco Type obsidian artifacts.
Andean Past. 5, 185-202.
(1986). Alternative sources in regional exchange systems: a gravity model approach.
Proceedings of the Prehistoric Society. 52, 131-142.
(2000). Analyzing Adaptive Strategies: Human Behavioral Ecology at Twenty-Five.
Evolutionary Anthropology. 51-73.
(1981). Andean Andesites and Crustal Growth.
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 301, 305-320. Abstract
(1988). Andean Interzonal Bartering: Why does it persist in a cash market economy?.
Multidisciplinary Studies in Andean Anthropology. 8, 87-100.
(1984). Andean Value Systems and the Development of Prehistoric Metallurgy.
Technology and Culture. 25, 1-36.