Conquistadors without Swords Author:Leo Deuel This is a story of insights and discoveries, introducing firsthand a host of scholars and amateurs. Alexander von Humbolt traced the Inca roads from Ecuador to Cajamarca. E. George Squier probed Inca cities and islands of Lake Nicaraghua. A. Douglass dated pueblo ruins by examining tree rings. In all 42 archaeologists tell of their own experiences.