Note VIII-17 — Chapter VIII · ANTIQUITIES OF VERA CRUZ.
Reading edition
Lyon's Journal, vol. ii., p. 209; Sartorius, in Soc. Mex. Geog., Boletin, 2da época, tom. i., p. 826. Mühlenpfordt, Mej., tom. ii., p. 89, also mentions the Paso de Ovejas remains.