Yes. The attorney-in-fact should turn over any account information, statements, check books, etc., to the executor or administrator. And yes, you are legally accountable for any funds you spent while you had power over the decedent's estate as their attorney-in-fact. If you are accused of self-dealing then you will need to prove that every expenditure you made while attorney-in-fact was for the sole benefit of the principal. Their death doesn't shield you from accountability. If you refuse to co-operate you can be sued.
Robert Nisbet has written: 'The quest for community' -- subject(s): Moral and ethical aspects, Moraland ethical aspects, Moraland ethical aspects of Social policy, Social policy 'The sociology of Emil Durkheim' 'Roosevelt and Stalin' 'Tradition and revolt' 'Community and power' 'Sociology as an art form'