Huaca Prieta fabrics with blue color that were analyzed, including

PDF) Chronology, mound-building and environment at Huaca Prieta, coastal Peru, from 13 700 to 4000 years ago

UV-vis spectral identification of the four peaks from Fig. 2.

Huaca Prieta fabrics with blue color that were analyzed, including

PDF) Early pre-Hispanic use of indigo blue in Peru

Structures of the compounds isolated from the Indigofera species.

Statistics of sequencing and assembly of the I. tinctoria and P.

XRD of Carboxymethyl S. mycrophylla gum

Oldest known indigo dyed textile found in Peru – The History Blog

PDF) Chronology, mound-building and environment at Huaca Prieta, coastal Peru, from 13 700 to 4000 years ago

Bird & Hyslop 1985 - Preceramic Excavations - Huaca Prieta - Chicama Valley (AMNH), PDF, Excavation (Archaeology)

Full article: An analysis of the fabrics from La Tiza, a site in the southern Nasca drainage

Huaca Prieta fabrics with blue color that were analyzed, including

PDF) Early pre-Hispanic use of indigo blue in Peru

Oldest known indigo dyed textile found in Peru – The History Blog