It shall be the duty of a board to furnish the Council with a copy of the minutes of proceedings of the board and any committee (other than an investigating or disciplinary committee) appointed by the board and of any document considered at a meeting of the board or committee; and it shall be the duty of the Council, at the request of a board, to make available to the board a copy of so much of any minutes of proceedings of the Council or a committee appointed by the Council and of so much of any document considered at a meeting of the Council or committee as relates to the board.