7 collected letters between William Murray and Patrick Kennedy, John Morris, and others. A receipt from William Murray to Patrick Kennedy paid for time "visiting the Lands on the Illinois River, and other Services performed in the Course of Your Negotiating the Land purchase." An receipt for goods delivered for John Morris by William Murray to "the Indians on account of Lands Purchased from them". A contract between William Murray and others (including the Gratz brothers) about the purchasing of ladns in Illinois for lead and copper mining.; American Philosophical Society