20 ILCS 3475/35
The Agency shall make all necessary rules, regulations, and bylaws not inconsistent with law to carry into effect the purposes of this Act and to procure from time to time as may be possible and practicable, at reasonable costs, all books, pamphlets, manuscripts, monographs, writings, and other material of historical interest and useful to the Agency bearing upon the political, physical, religious, or social history of the State of Illinois from the earliest known period of time. The Agency may, with the consent of the Board, exchange any books, pamphlets, manuscripts, records, or other materials which such library may acquire that are of no historical interest or for any reason are of no value to it, with any other library, school or historical society. The Agency shall distribute volumes of the series known as the Illinois Historical Collections now in print, and to be printed, to all who may apply for same and who pay to the Library and Museum for such volumes an amount fixed by the Agency sufficient to cover the expenses of printing and distribution of each volume received by such applicants. However, the Agency shall have authority to furnish 25 of each of the volumes of the Illinois Historical Collections, free of charge, to each of the authors and editors of the Collections or parts thereof; to furnish a reasonable number of each of the volumes of the Collections without charge to archives, libraries, and similar institutions from which material has been drawn or assistance has been given in the preparation of such Collections, and to the officials thereof; and to furnish, as in his or her discretion he or she deems necessary or desirable, a reasonable number of each of the volumes of the Collections without charge to the University of Illinois Library and to instructors and officials of that University, and to public libraries in the State of Illinois. The Agency may, with the consent of the Board, also make exchanges of the Historical Collections with any other library, school or historical society, and distribute volumes of the Collections for review purposes.
20 ILCS 3475/35