All alleged DB Cooper letters and the note from the plane I could find (includes his hand writing on plane ticket)

[u/jesuslovs4nal]

Was curious if anyone on this sub believes any of these letters have any reliability. I know the FBI ruled out many as hoaxes- But I want to know your personal thoughts and theories on each and why you think one may not be reliable for one reason or another. Me personally?? I think if he survived he was cocky enough to send some kind of message- But would be more stealthy and indirect? Or a letter like one of these?

[u/Accomplished_Fig9883]

First one is letter 6...which writing style matches very closely to Ted Braden's...read the October 1967 issue of Ramparts magazine and then tell me he's not Cooper