520 ILCS 5/3.14
All fur buyers and non-resident auction participants shall maintain records of the receipt, collection, purchase, and sale of green hides of fur-bearing mammals. A record of each transaction shall be created at the time it is executed specifying the date, numbers, and kinds of green hides purchased, sold, or transferred, the price paid for each green hide, if any, and the name, address, and Department customer identification number of the other party. Records of transactions with non-residents may substitute the Department customer identification number with an equivalent identifier such as a license or permit number from the person's place of residence. Records of transactions shall be retained for 2 years from the date of execution and shall be presented for inspection at any reasonable time a request is made by authorized employees of the Department or any sheriff, deputy sheriff, or peace officer. Failure to produce records of transactions for green hides shall be prima facie evidence that the green hides are contraband in this State. A numbered receipt shall be issued to the other party when purchasing green hides of fur-bearing mammals. The receipt shall specify the name and address of the person selling the green hides, the numbers and kinds of green hides sold, the price paid for each green hide, the date of the transaction, and the name of the fur buyer or non-resident auction participant.
520 ILCS 5/3.14