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http://scottishritemasons-can.org/eagle.htm

Long used as the insigne of a Scottish Rite Mason, the "Double Headed Eagle of Lagash" is now the accepted emblem in the United States of America of the 32 Degree. It is the oldest crest in the world. It was a symbol of power more than two thousand years before the building of King Solomon's Temple. No other heraldic bearing, no other emblematic device of today can boast such antiquity.

The double-headed eagle first originated in the mighty Sumerian city of Lagash. From cylinders taken from the ruins of this ancient city, the double-headed eagle seems to have been known to the kings of the time as the Storm Bird. From the Sumerians this symbol passed to the men of Akkad, from whom it was brought to the Emperors of the East and West by the Crusades. Charlemagne first made use of the double-headed eagle when he became head of the German Empire, the two heads denoting the union of Rome and Germany, in AD 802.



см также

http://en.wikipedia.org/wiki/Two-headed_eagle
http://ru.wikipedia.org/wiki/%D0%94%D0%B2%D1%83%D0%B3%D0%BB%D0%B0%D0%B2%D1%8B%D0%B9_%D0%BE%D1%80%D1%91%D0%BB