Note IX-56 — Chapter IX · ANTIQUITIES OF THE CENTRAL PLATEAUX.
Reading edition
Additional references on the Calendar-Stone:—Tylor's Anahuac, pp. 238-9; Mayer's Mex. Aztec, etc., vol. i., p. 117, cuts; Id., in Schoolcraft's Arch., vol. vi., p. 590, with plate; Gallatin, in Amer. Ethno. Soc., Transact., vol. i., pp. 70, 94-103, 114.