Edmond Harjo

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File - In this Nov. 20, 2013 file photo, Edmond Harjo, 96, of the Seminole Nation of Oklahoma, and one of the last surviving code talkers, places his hand over his heart as the American flag is presented during a Congressional Gold Medal ceremony on Capitol Hill in Washington. Harjo died March 31, 2014, at Mercy Hospital in Ada, Okla., according to the Swearingen Funeral Home. Harjo's nephew, Richard Harjo, said his uncle had a heart attack. He was 96. (AP Photo/J. Scott Applewhite, File)