It is unclear exactly how the headdress, made of hundreds of long quetzal feathers and more than 1,000 gold plaques, ended up in Austria, where it is on display at a museum in Vienna. Historians ...

Another glyph, slightly to the left, represents a xiuhhuitzolli, a diadem or headdress, worn by the Aztec ruler himself. Stuart believes the two glyphs, taken together, send a clear message of ...