225 ILCS 655/15
Each registrant shall maintain records of each transaction under this Act, including a description of slaughter livestock, the name and address of the seller, the purchase price and the date of purchase. These records shall be retained for a period of 2 years.
Each registrant shall, upon proper request during ordinary business hours, permit authorized representatives of the Director to enter the place of business and to examine records pertaining to the business of the registrant as such and to make copies thereof, and to inspect such property of persons subject to the provisions of this Act and any regulations promulgated thereto. Any necessary facilities for such examination of records and inspection of property shall be extended to authorized representatives of the Director by the registrant or his agent.
225 ILCS 655/15