A nine-digit number typed at the bottom of a letter believed to be sent by the infamous hijacker D.B. Cooper confirms the letter could have come from only one person, according to a cold-case ...
“Sirs, I knew from the start that I wouldn’t be caught,” the letter begins. Postmarked Dec. 11, 1971, it was signed, “D.B. Cooper,” the name the press had given to the unknown criminal who, less than ...
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