Supplementary notes on the quipus in the American Museum of Natural History

von Locke, Leslie Leland
Anthropological papers of the American Museum of Natural History ; v. 30, pt. 2
New York, NY : American Museum of Natural History, 1928.
Umfang/Format: S. 39-73 : 1 Ill. ; zahlr. Tab.

The ancient Quipu or Peruvian knot record

von Locke, Leslie Leland
New York, NY : American Museum of Natural History, 1923.
Umfang/Format: 84 S. : 17 Ill. ; 59 Taf. ; 1 Kt.