If you mean the flag it is in the Smithsonian archives in Washington DC.
The original lyrics for the Star Spangled Banner came from the poem "The Defense of Fort McHenry" written by Francis Scott Key in 1814.
The Star Spangled Banner
The original poem was written in 1814.
The Defense of Fort McHenry
Star Spangled Banner
Star spangled banner in Navajo
fifteen inches
cnn.com you can buy the ORIGINAL copy
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Smithsonian Museum
The Star Spangled Banner
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