• Abbott
  • Accenture
  • Alcan Packaging
  • Allstate
  • American Medical Association
  • American National Can
  • Ameritech
  • Andersen Consulting
  • AT&T
  • Baxter
  • BDO
  • Caterpillar
  • Chicago Auto Show
  • Cole Taylor Bank
  • Comdisco
  • Corn Products Intl.
  • Dean Foods
  • Dean Witter
  • Elgin Recycling
  • Exxon Mobil
  • Financial Times
  • First Penn-Pacific
  • Foldcraft
  • Fuji Film
  • Galileo Intl.
  • GE Capital Rail Services
  • General Mills
  • Glenview State Bank
  • Golden Apple Foundation
  • Google
  • Green Schools National Network
  • Henkels & McCoy
  • Home Depot
  • HSBC
  • IHOP
  • Integrated Project Management
  • International Housewares Association
  • Jewel/Osco
  • Jones Lang LaSalle
  • Keller Williams Realty Partners
  • Kemper Financial
  • Knowles
  • Kraft Foods
  • Lloyds Register
  • Marriott
  • Marsh USA
  • McKinsey
  • Monsanto
  • Montgomery Watson Harza
  • Motorola
  • Nat. Alliance for Public Charter Schools
  • National School Boards Association
  • Northwestern University
  • NuCare
  • Pechiney
  • Pfizer
  • Puma AG
  • Quaker Oats
  • Relco Locomotives
  • Safety-Kleen
  • Sara Lee
  • Searle Pharmaceuticals
  • Stone Container
  • Toyota
  • United Airlines
  • United Stationers
  • University HealthSystem Consortium
  • UOP
  • Vetter Pharma
  • Waste Management
  • Wyeth Pharmaceuticals
  • Zebra Technologies