Works
• Alexander von Humboldt • Off With Their Heads (1937) • Ecuador the Unknown (1938) • The Tsátchela Indians of Western Ecuador (1939) • The Galapagos Islands and Charles Darwin: Notes on an Exhibition at the Bancroft Library (1939) • Quetzal Quest - The Story of the Capture of the Quetzal, the Sacred Bird of the Aztec and the Mayas (1939) • Jungle in the Clouds (1940) • Treasure of the Tortoise islands (1940) • Riches of South America (New World Neighbors) (1941) • Riches of Central America (New World Neighbors) (1942) • Miskito Boy (1943) • Paper and Civilization (Scientific Monthly, vol. 57, 1943) • Mexican Papermaking Plants (Journal of the New York Botanical Gardens, vol. 44, 1943) • The Jicaque Indians of Honduras (1943) • The Aztec and Maya Papermakers (1943) • South America Called Them: Explorations of the Great Naturalists: La Condamine, Humboldt, Darwin, Spruce (1945) • South American Zoo (1946) • F. Catherwood 1799-1854 - Architect-Explorer of Two Worlds (1946) • Maya Explorer: John Lloyd Stephens and the Lost Cities of Central America and Yucatán (1947) • The Green World of the Naturalists - A Treasury of Five Centuries of Natural History in South America (1948) • A Guide to Lima, the Capital of Peru (Guides to Peru) (1949) • A Guide to Cusco (Guides to Peru) (1949) • A Guide to Sacsahuaman: The Fortress of Cusco (Guides to Peru) (1949) • Ecuador and the Galápagos Islands: A History (1949) • Frederick Catherwood, Architect (1950) • Huancayo and Ayacucho (His Guide to Peru) (1950) • A Guide to Guayaquil (Guides to Ecuador) (1950) • A Guide to St Vincent (1950) • A Guide to Machu Picchu (Guides to Peru) (1952) • The Four Seasons Of Manuela. A Biography. The Love Story of Manuela Sáenz and Simón Bolivar (1952) • Highway of the Sun (1955) - about an expedition of discovery of the ancient roads of the Inca • A Guide to Cusco and Machu Picchu (Guides to Peru) (1956) • Realm of the Incas (1957) • The Aztec: Man and Tribe (1958) • A Guide to Sacsahuaman: Ollontay-Tambo and Pisac (1958) • The World of the Maya (1960) • Maya, Land of the Turkey and the Deer (1960) • The Ancient Sun Kingdoms of the Americas: Aztec, Maya, Inca (1961) • The Incas: People of the Sun (1961) • A Chronological Chart of Pre-Columbian Indian Cultures of the Americas and World Events (1962) • The Desert Kingdoms of Peru (1965) • Roman Roads (1966) • Roads that Led to Rome (1967) • The Gold of El Dorado: The Quest for the Golden Man (1968) • The Incas of Pedro De Cieza De Leon (1970) • Search for the Maya: The Story of Stephens and Catherwood (1973) • The Germanic People in America (1976) • The Royal Road of the Inca (1976) • Jicaque (1977) • The Sun Kingdom of the Aztecs (1977) • Cuzco and Machu Picchu (1979) ABC Pocket Guide de culo • Capac ñan, Schicksalsstrasse der Inkas ==References==