Statute of limitations has long since ran out so there is nothing you can do as far as criminal charges. However, anyone can sue anyone else for literally any, or no, reason in civil court. That said, 51 years is a long time. evidence could be lost, witnesses could have died, etc. It's always a hard sell trying to sue the govt for anything. Personally, I would advise against it after such a long period of time simply because your chances of success are very low and, unless you're rich, you're going to spend a lot of money with little or no return.
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