5 ILCS 532/5
The State of Illinois hereby cedes to the United States concurrent jurisdiction in and over the following land comprising the site of the United States Penitentiary, Thomson, described as follows:
A part of the southeast quarter and southwest quarter of section 13 and part of the northeast quarter and northwest quarter of section 24 all in township 23 north range 3 east of the fourth principal meridian Carroll County, Illinois. More particularly described as follows: Commencing at the southwest corner of the southwest quarter of said section 13 as the point of beginning of the tract to be described: from the point of beginning. Thence North 0108'51" west, (bearings are for descriptive purposes only) along the west line of said southwest quarter of section 13, a distance of 942.27 feet; thence north 8745'03" east, a distance of 2,733.29 feet to the westerly right-of-way line of the Chicago, Burlington and Quincy Railroad; thence south 0634'13" east along said westerly right-of-way line, a distance of 1,916.34 feet; thence south 8747'21" west, a distance of 348.55 feet; thence south 0214'57" east, a distance of 380.05 feet to a point on the south line of the north half of the northwest quarter of section 24; thence south 8745'03" west along said south line of the north half of the northwest quarter of section 24, a distance of 2,589.84 feet to the southwest corner of the north half of the northwest quarter of section 24; thence north 0026'24" west, along the west line of the north half of the northwest quarter of said section 24, a distance of 1,349.28 feet to the point of beginning, in Carroll County, Illinois. Containing 146.541 acres.
5 ILCS 532/5