AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 107:421 (1998) ERRATUM: Beall CM, Brittenham GM, Strohl KP, Blangero J, Williams-Blangero S, Goldstein MC, Decker MJ, Vargas E, Villena M, Soria R, Alarcon AM, and Gonzales C (1998) Hemoglobin Concentration of High-altitude Tibetans and Bolivian Aymara. Am. J. Phys. Anthropol. 106:385–400. Figures 1A and B were switched with Figures 3A and B. The Figures on pages 390 and 391 plotting hemoglobin concentration against percent of oxygen saturation of arterial hemoglobin are Figures 3A and B rather than Figures 1A and B as printed. The Figures on pages 394 and 395 plotting hemoglobin concentration against age are Figures 1A and B rather than Figures 3A and B as printed. r 1998 WILEY-LISS, INC.