It all depends on what the information is. Most likely, you've been holding on to the records at least 5 years too long. The information should be in the bank's record retention policy. Since you do not have them, try (as they are state specific) to get some from your state's banking association.
Absent of that, the Assn of Management Accountants (I believe) has one for sale.
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Integrity. With it, nothing else matters. Without it, nothing else matters.