Abbott Laboratories
Accenture
ADM
Allstate
Altria Corporation Services, Inc.
Baxter Healthcare
BDO Seidman, LLP
Blackman Kallick
BlueCross/BlueShield
BP Products North America
Calamos Asset Management, Inc.
Career Education Corporation
Caterpillar
Clifton Gunderson, LLP
Crowe Horwath, LLP
Deloitte
Eder, Casella & Company
Ernst & Young, LLP
Excelon Corporation
Frank L. Sassetti and Company
Frost, Ruttenberg and Rothblatt
Grant Thornton, LLP
Hartmarx
Hewitt Associates
HSBC
Huron Consulting Group Inc.
Hutton, Kruse, & Fink
Illinois Tool Works
John Deere
Klein, Hall & Associates
KPMG LLP
Kraft Foods

Kutchins, Robbins, & Diamond, Ltd.
Lawson Products
Lindgren, Callihan, VanOsdol & Co.
Meaden & Moore, LLP
Miller Cooper & Co, LTD
Motorola
Mueller & Co.
Nykiel-Carlin & Co.
OfficeMax
Omion Automotive Electronics
Payne, Gray, Schmidt & Associates
Pierce, Givens & Associates
Plante & Moran, LLC
PricewaterhouseCoopers
Reznick Group, P.C.
RSM McGladrey
Scholle Corporation
Sea Pines Resort
Sears Holding Corporation
ServiceMaster Company
Sikich
Speedway Super America
State Farm
The Bradford Group
Tribune Company
United Stationers
U.S. General Accountability Office
Walgreens
Warady & Davis, LLP
Wolf and Company, P.C.
Woodfield Fund Administration
Woodward Governor