EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports dated January 29, 1996 included in this Form 10-K/A into the Company's previously filed registration statements on Form S-8 (File No.'s 33- 8510 and 33-53517), Form S-4 (File No. 33-60013) and Form S-3(File No. 33-5780). ARTHUR ANDERSEN LLP Chicago, Illinois April 19, 1996