The Nuttall Encyclopedia
A civilised people who flourished at one time in Ecuador, Peru, and Bolivia, and spoke a highly-cultivated language called Quichua after them.
Wood, James, ed. Entry for 'Quichuas'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/q/quichuas.html. Frederick Warne & Co Ltd. London. 1900.