EXHIBIT 23.1


                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



As independent public accountants, we hereby consent to the incorporation of 
our reports included in this Form 10-K, into the Company's previously filed 
Registration Statements on Form S-8 (No. 33-62901, 333-23261, 33-45156) and 
Form S-3 (No. 333-12781).

                                      /s/ Arthur Andersen LLP
                                      -----------------------
                                      ARTHUR ANDERSEN LLP

Chicago, Illinois
June 30, 1997