Garcilaso de la Vega "El Inca" — son of an Inca princess and a Spanish conquistador — gives the fullest insider account of Inca religion, ritual, and social order. The history of the Incas, from origins to the Conquest, told from within.
1 chapter
Tradition
Spanish, c. 1609. The 19th-century Hakluyt Society edition (Markham, 1869–1871) translated it into English. The most important non-Quechua source on Inca religion.
Translation
Clements R. Markham, tr., *First Part of the Royal Commentaries of the Yncas, by the Ynca Garcilasso de la Vega* (Hakluyt Society, London, 1869-1871). Public domain.
License
Public domain (pre-1929 English translation). Reproduced for educational and religious commentary.