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Fig. 28. Photograph by H. L. Tucker, Engineer, Yale Peruvian Expedition of 1911.

Fig. 43. Photograph by H. L. Tucker.

Fig. 44. Photograph by Professor Hiram Bingham.

Figs. 136, 139, 140. Data for hachured sketch maps, chiefly from topographic sheets by A. H. Bumstead, Topographer to Professor Bingham’s Peruvian Expeditions of 1912 and 1914.