Khipu Datasets
Digital
- The Open Khipu Repository (OKR)
- Formerly known as the Harvard Khipu Database Project.
- The Khipu Field Guide (KFG)
In print
- Numbers and Relations from Ancient Andean Quipus
- An article published by Marcia Ascher and Robert Ascher in 1972 which contains the descriptions and data for 9 khipus (AS1–AS9).
- Code of the Quipu: Databooks I and II
- Originally published in 1978 (book I) and 1988 (book II), these volumes contain the descriptions and data for the more than 200 khipus (AS10–AS215) studied Marcia Ascher and Robert Ascher.
- Descripción de los quipus del Museo de Sitio de Pachacamac
- A 2006 book by Hugo Pereyra Sánchez.
- Descripción de Una Muestra de Quipus Del Museo Nacional de Arqueología, Antropología e Historia Del Perú.
- A 2011 book by Hugo Pereyra Sánchez.