An Act Prohibiting the Trading with Indians, § 2, ILL. COMP. STAT. (Matthew Duncan 1815) (Law Passed 1813).

“AN ACT
Prohibiting the trading with Indians...

    ...Sec. 2. Be it further enacted, That if any person or persons, shall purchase or receive of any Indian in the way of barter, or trade a gun or other article commonly used in hunting, or any instrument of husbandry or cooking utensil, or clothing or horse, shall forfeit and pay any sum not exceeding fifty dollars nor less than ten, to the use of the territory, to be recovered as is directed in the former section, one half to the use of the territory and the other to the use of the informer—Provided, that nothing herein contained shall be so constructed as to restrain any person from trading with Lewis Decoigne, the chief of the Kaskaskia Indians, for any article that he may deem necessary in behalf of said tribe, nor so as to impair or weaken the powers and authority that now, or at any time hereafter may be vested in the governor, or other person, as superintendent or agent of Indian affairs, or commissioner plenipotentiary for treating with Indians, within the territory.”