Catalog", article 6.Guide to Ethnohistorical Sources Part 1; Handbook of Middle American Indians. University of Texas Press 1972, pp. 243–278. Robertson, Donald. "Techialoyan Manuscripts and Paintings with a Catalog." article 24, Guide to Ethnohistorical Sources Part 3; Handbook of Middle American Indians''. University of Texas Press 1975, pp. 253–281. External links Bibliography of Mesoamerican Codices Detailed interpretation, with annotated photos, of the last pages of the Boturini Codex Page-by-page views of Codex Ixtlilxochitl Complete scan of the Tovar Codex from the John Carter Brown Library Codices Manuscripts by area A 16th century in the Aztec civilization 16th century in Mexico 16th century in New Spain Pictograms