Machu Picchu : a citadel of the Incas - Bingham, Hiram, 1875-1956 (Hacker Art Books, 1979)
"Report of the explorations and excavations made in 1911, 1912, and 1915 under the auspices of Yale University and the National Geographic Society."
Originally published for the National Geographic Society by Yale University Press, New Haven, which was issued as no. 1 of Memoirs of the National Geographic Society.