Click Here to Read: Researchers Prove Rare Mixtec Codex Is a Palimpsest by Claire Vooon the HyperAllergic website n on August 31, 2016.
Pages 10 and 11 of the back of Codex Selden, with pages as they appear to the naked eye and images created using hyperspectral imaging to show the underlying hidden pictographic scenes (photo © Journal of Archaeological Sciences: Reports, 2016 Elsevier)