Preliminary Report of the Yale Peruvian Expedition. Bulletin of American Geographical Society, XLIV, 20–26, January, 1912.
The Ascent of Coropuna. Harper's Magazine, CXXIV, 489–502, March, 1912. Illus.
Vitcos, The Last Inca Capital. Proceedings of American Antiquarian Society, XXII, N.S., 135–196. April, 1912. Illus., plans.
The Discovery of Pre-Historic Human Remains near Cuzco, Peru. American Journal of Science, XXXIII, No. 196, 297–305, April, 1912. Illus., maps.
A Search for the Last Inca Capital. Harper's Magazine, CXXV, 696–705, October, 1912. Illus.
The Discovery of Machu Picchu. Ibid., CXXVI, 709–719, April, 1913. Illus.
In the Wonderland of Peru. National Geographic Magazine, XXIV, 387–573, April, 1913. Illus., maps, plans.
The Investigation of Pre-Historic Human Remains Found near Cuzco in 1911. American Journal of Science, XXXVI, No. 211, 1–2, July, 1913.
The Ruins of Espiritu Pampa, Peru. American Anthropologist, XVI, No. 2, 185–199. April–June, 1914. Illus., 1 pl., map.
Along the Uncharted Pampaconas. Harper's Magazine, CXXIX, 452–463, August, 1914. Illus., map. Page 348