1. Preston E. James, Latin America (3rd ed. rev.; New York: The Odyssey Press, 1959 ), p. 205–206.
2. Most statistics concerning Bolivia are at best only educated guesses and are often misleading. They should be treated with caution. The exact area of Bolivia, for example, is still unknown since the boundary with Brazil is still not delimited. Estimates vary with the method of measurement used.
3. Harold Osborne, in his Bolivia; A Land Divided (2nd ed.; London: Royal Institute of International Affairs, 1954), p. 2, gives the area of Bolivia in 1825 as approximately 904,952 square miles, of which 189,353 were lost to Brazil, 96,527 to Peru, 94,010 to Paraguay, 65,924 to Argentina and 46,333 to Chile. Other writers cite different figures which do not vary greatly from these.
4. James, op. cit., pp. 6 and 11.
5. official estimate, cited by J. Valerie Fifer in “Bolivia’s Pioneer Fringe”, The Geographical Review, LVII (January, 1967 ), p. 1.