Bingham was a lecturer and a professor,  not an archeologist.  Yest he rediscovered then then-largely forgotten city of Machu Picchu, which he believed to be an important religious centre of the Incas.  Thrilled at the possibility of more unexplored Inca cities, in 1911 he formed the Yale Peruvian Expedition, rediscovering and  correctly identifying the cities of Vitcos and Vilcabamba.  He later was elected Lt. Governor of Connecticut.  Illustrated with black and white photographs.