The Mayas, the Sources of Their History: Dr. Le Plongeon in Yucatan, His Account of Discoveries
Public domain
Two papers read to the American Antiquarian Society (1876, 1877) reporting Le Plongeon's Yucatan excavations (with plates of the Chichen Itza Chac-Mool statue). Privately printed in Worcester, Massachusetts, with a presentation line 'With the respects of the writer'.
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