Incoming Resources
- Ancient Inca technology, Ryan Nagelhout
- The royal road of the Inca, Victor Wolfgang von Hagen
- Machu Picchu, by Kristine Spanier
- Ancient Inca culture, Kristen Rajczak Nelson
- Ancient Incas, by Michael Burgan
- History of the Incas, Pedro Sarmiento de Gamboa
- Monuments of the Incas, with 174 duotone photographs and 31 site plans and maps, text by John Hemming ; photographs by Edward Ranney
- Machu Picchu, Gillian Richardson and Heather Kissock
- Secrets of Machu Picchu, lost city of the Incas, by Suzanne Garbe ; Consultant: Lind Olson, Professor of Humanities, Minot State University, Minot, North Dakota
- The Inca, by Patricia McKissack
- Inca religion and customs, by Bernabe Cobo ; translated and edited by Roland Hamilton
- Civilizations of Peru before 1535, Hazel Mary Martell
- The mystery of the Nazca Lines, by Bonnie Hinman ; content consultant, Michael Malpass, PhD, Professor of Anthropology, Ithaca College
- The discovery and conquest of Peru, chronicles of the New World encounter, Pedro de Cieza de León ; edited and translated by Alexandra Parma Cook and Noble David Cook
- The Inca world, the development of pre-Columbian Peru, A.D. 1000-1534, Cecilia Bákula [and others] ; edited by Laura Laurencich Minelli ; color photos by Mireille Vautier
- National Geographic investigates ancient Inca, archaeology unlocks the secrets of the Inca's past, by Beth Gruber ; Johan Reinhard, consultant
- Inca and Spaniard, Pizarro and the conquest of Peru, by Albert Marrin
- The Incas, Jane Shuter
- Daily life in the Inca empire, Michael A. Malpass
- The Incas, Alison Imbriaco
- Breve historia de los Incas = Brief history of the Incas, Patricia Temoche Cortez
- The ancient Inca, written by Patricia Calvert
- The Incas, Sarita Kendall
- The Inca empire, Jane Bingham
- The Incas, by Anita Ganeri
- The Inca, by James A. Corrick
- The Incas, Kathryn Hinds
- Life in ancient South America, written by Hazel Richardson
- Monuments of the Incas, text by John Hemming ; photographs by Edward Ranney