1 EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Form S-8 of our report dated February 7, 1997 included in the Company's Form 10-K for the year ended December 31, 1996 and to all references to our Firm included in this registration statement. ARTHUR ANDERSEN LLP Chicago, Illinois October 21, 1997