When the Smithsonian's Hall of Physical Anthropology opened in 1965 it featured 160 Andean skulls affixed to a wall to visualize how the world's human population had exploded since the birth of Christ. Through a history of Inca mummies, a pre-Hispanic surgery called trepanation, and Andean crania like these, Empires of the Dead explains how "ancient Peruvians" became the single largest population in the Smithsonian and many other museums in Peru,...