Of passing interest ...
A continuing series of irregular blog posts highlighting articles in the popular press.
Hardman, Chris. "Unraveling an Inca mystery." Américas, vol. 58, no. 5 (Oct. 2006), p. 48-55. col. ill.
"In the Andes [Laguna de los Cóndores near Chachapoyas, Peru], a burial-site discovery of knotted string called khipu has experts wondering what the ancients were trying to tell us."
American Museum of Natural History khipu illustration from The Khipu Connection