ABSTRACT
Nowhere else on earth do the developed world and the Third World meet face to face across such a lengthy border, as along the one between the United States of America and Mexico. This chapter deals mainly with one small but relatively densely populated portion of that starkly differentiated borderland between affluence and relative poverty: the delta of the Colorado River, including parts of the states of California and Arizona to the north, and of Baja California Norte and Sonora to the south (Figure 13.1). It results from a lengthy if intermittent period of fieldwork, extending from 1964 through 1988, and most heavily concentrated in 1973 and 1988.
