Legal Question in Business Law in California

Re: Power of Attorney

You can cancel a power of attorney by thought alone. However, it won't do any good until you notify people. And in order to have proof that you notified them, you should do so in writing. And in the case of your banks, you should prepare a written, traceable trail of the notification: take a letter into the bank, with a copy for them to date stamp and return to you. You might consider publishing a small notice. Be sure the bookkeeper's husband is informed that he no longer has power of attorney.