The Board shall provide for the proper and safe keeping of its permanent records and for the recording of the corporate action of the District. It shall keep a true and accurate account of its receipts and an annual audit shall be made of its books, records and accounts. All officers and employees authorized to receive or retain the custody of money or to sign vouchers, checks, warrants or evidences of indebtedness binding upon the District shall furnish surety bond for the faithful performance of their duties and the faithful accounting for all moneys that may come into their hands in an amount to be fixed and in a form to be approved by the board.