Some Interesting Facts About Paper Money: "D. B. Cooper" Skyjacking Notes on Heritage Auction
Please note that the FBI / Feds illegally kept the bulk of the cash despite it not being necessary for evidence, insurance having already paid its "owner" the bank and the fact they were ripping off poor people and an 8 year old boy.
Or alternatively CRIME DOES NOT PAY.
DB Cooper: the gift that will never stop giving. He and John Dillinger must have had some fine old drinking sessions in the Hole in the Wall in Greece...