EXHIBIT 23.1
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
   
  As independent public accountants, we hereby consent to the use of our
reports dated February 23, 1994 (and to all references to our firm) included in
or made a part of this registration statement.     
 
                                          Arthur Andersen & Co.
 
Chicago, Illinois
   
May 27, 1994