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Excavated from the Platform of the Eagles by Augustus Le Plongeon at Chichen Itza	Augustus Le Plongeon at Chichen Itza 1875

Old Chichen Itza	Old Chichen Itza

Interior Kukulcan Pyramid, Chichen Itza	Interior Kukulcan Pyramid, Chichen Itza

Temple of the Warriors, Chichen Itza	Temple of the Warriors, Chichen Itza

Miller, Mary Ellen. A Re-examination of the Mesoamerican Chacmool. The Art Bulletin, March 1985
Lopez Austin, Alfredo and Leonardo Lopez Lujan. Los Mexicas y el Chacmool. Arqueologia Mexicana, Vo. IX, No. 49, May-June 2001.