Thomas D. Hall is Professor Emeritus in the Department of Sociology and Anthropology, DePauw University, Greencastle, Indiana. He holds an MA in Anthropology, University of Michigan, and a PhD in Sociology, University of Washington. His interests include Indigenous peoples, ethnicity, comparative frontiers, and world-systems analysis. He was guest editor of “Globalization in Historical Retrospective and World System Approaches.” Journal of Globalization Studies 5(1) (May 2014):1–176, including his article “Toward Comparative Globalizations: Globalization in Historical Retrospective and World-Systems Analysis,” 3–10. He also wrote “The Ecology of Herding: Conclusions, Questions, Speculations” in The Ecology of Pastoralism, ed P. Nick Kardulias, 2014. Boulder: University Press of Colorado. Address: Use E-mail: thall@depauw.edu.