Original time and payroll records, delivery receipts, inspection reports evidencing receipt of goods, copies of purchase orders and vendor vouchers, property records, postage records, bank statements, deposit slips, paid and spoiled checks, and other papers relating to receipts and payments subject to field audit shall be so filed as to be readily accessible to field auditors.
N.Y. Comp. Codes R. & Regs. Tit. 2 § 16.3