Bk. i, Appendix.

In The Ascent of Olympus.

See Sahagun, bk. vii, cs. x–xiii, for a much more detailed description.

See Sahagun, bk. iii, Appendix, c. iv.

Historia de los Indios de la Nueva España, Preface, in Izcazbalceta, vol. i, 1858, pp. 7, 10.

Izcazbalceta, vol. iii, 1891, p. 237.

Appendix to bk. i, c. xiv.

Brinton, Myths of the New World, p. 190.

Commentary on Codex Vaticanus B, p. 287.

Bulletin 28 of U.S. Bureau of Ethnology, pp. 355 ff.