The original power-of-attorney document should be kept in a safe place, either at home, in a safe deposit box, or at his lawyer's office. The person named as agent or attorney-in-fact in the document should be given a certified copy and told where the original is. Alternate or successor agents should also get certified copies and be told where the original is, as should close relatives. His tax preparer, accountant, lawyer, and broker should have copies in their files. And each financial institution where he regularly does business or maintains an account should also have a copy for its files.