James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 239.
Tochtli Ic Onoc Tzatzapotlan, Tochtli Yc Onoc Tzatazpotla
one of the boundaries of the Nonohualca of Tollan (Tula) Historia Tolteca-Chichimeca, 4v. Taken from the image of the folio published in Dana Leibsohn, Script and Glyph: Pre-Hispanic History, Colonial Bookmaking, and the Historia Tolteca-Chichimeca (Washington D.C.: Dumbarton Oaks, 2009), 65. Paleography and regularization of this toponym by Stephanie Wood.
(Tepetlaoztoc, mid-sixteenth century) Barbara J. Williams and H. R. Harvey, The Códice de Santa María Asunción: Facsimile and Commentary: Households and Lands in Sixteenth-Century Tepetlaoztoc (Salt Lake City: University of Utah Press, 1997), 72.
the feather of a bird of yellow color (from the toztli bird), used for rites, dance, and "sorcery" A. Wimmer, citing Garibay, and published in the Gran Diccionario Náhuatl, https://gdn.iib.unam.mx/diccionario/tocihuitl/73946. Translation to English by Stephanie Wood.
The orthographic variant with the "z" has not yet been attested, but we are including it here given that the feather comes from the toz(tli) bird.