Accelerated Receivables Management
Akysys
Amgen
Baxter, Inc.
Bank One
BlueCross BlueShield of Illinois
Caremark
Commonwealth Edison
Conservco
Deloitte & Touche
Eli Lilly and Company
G. D. Searle, Inc.
GTE Directories
HSBC - North America
Illinois Paralegal Association
IMC Global
Maritz Research
Master of Project Management Program, Northwestern University
Medtronic, Inc.
Needham Harper Worldwide
Oculon, Inc.
Patrick Engineering
PRC Engineering
Price Waterhouse Coopers
Primera Engineers, Ltd.
QuesTek Innovations LLC
Rehabilitation Institute of Chicago
RISE International, LLC
Sargent & Lundy LLC
Schal-Bovis, Inc.
Southwestern Bell Telephone
Therapy Network Resources
Union Bank of Switzerland
Waste Management, Inc.
ZS Associates