- Boeing North America, Inc. (Rockwell International)
- Employee Benefits of America
- MCI Telecommunications
Corporation
- Marsh
McLennan
- Ringling
Bros., Barnum & Bailey Combined Shows, Inc.
- American Council on Education
- Dominion Bank
- Georgetown University
- Teachers Insurance and Annuity Association
- Hoffman-La Roche, Inc.
- National Grain and Feed Association
- Texel Corporation
- Nordstrom, Inc.
- GTE Government Services
- ARBEE Associates
- Executive Office Group
- Hechinger, Mr. John W., Sr.
- Rubloff Incorporated
- Federal Home Loan Bank Board
- Saatchi & Saatchi
- The Washington Post
- AT&T Network Systems
- Fisher Barkanic Associates PC
- Weinberg, Bergeson, Neuman
- Wide World of Wines
- Fidelity Management & Research Co., Inc.
- Howard Hughes Medical Institute
- Landmark Systems
- Burger & Kendall
- COMNET
- EMKAY Development Co., Inc.
- Greater Baltimore Medical Center
- Falcon Micro Systems
- Interoffice
- Morrison, Hecker, Curtis, Kuder & Parrish
- Schering-Plough Corporation
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- Manufacturer’s Alliance for Productivity
& Innovation
- Georgetown Insurance
- PHH Homequity
- Scientech
- American International Automobile Dealers
Association
- American Realty Tax Service
- Georgetown Partners
- 4 L Limited Partnership
- Hunter Development Company
- Resource Planning Corporation
- Merrill Lynch
- Hoechst Celanese Corporation
- Becker, Tempchin, Brockman & Berg
- U S F & G Company
- The Somerset House
- Centel Information Systems, Inc.
- Marriott Corporation
- The Donohoe Company
- Carey Winston
- Hanley Wood, Inc.
- Harvey Construction
- Deltek
Systems
- York Associates
- Food Marketing Institute
- Gilpin Mortgage
- Conceptual Systems
- Lasalle Partners
- Lockheed Martin (Martin Marietta Corporation)
- Burke & Herbert Bank & Trust
- E. J. Murray Company
- GOULD, Inc.
- METPATH Incorporated
- IBM Corporation
- National Electrical Manufacturers Association
- Quality Inns/Manor Care
- U.S. Travel
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