Government
- AbilityOne
- Bureau of Alcohol, Tobacco, Firearms, and Explosives
- California Department of Health Services
- Department of Health and Human Services
- Department of State
- Department of the Interior
- Library of Congress
- Maryland Health Care Commission
- Montgomery County Schools
- National Archives
- Natl. Ctr. for Complementary & Alternative Medicine
- National Industries for the Blind
- National Institutes of Health
- National Institute for Literacy
- National Library of Medicine
- Smithsonian Institution
- USAID
- U.S. Information Agency
- University of Colorado
- University of Maryland
Not for profit
- AARP
- American Academy of Optometry
- American Assoc. of Geriatric Psychology
- American Psychiatric Association
- Amideast
- Archdiocese of Washington
- Association of American Law Schools
- California Children’s Health Initiatives
- Catholic Charities
- Center for Tobacco Cessation
- Coalition to End Childhood Lead Poisoning
- Diocese of Allentown
- Diocese of Arlington
- Global Impact
- Grantmakers in Health
- International Youth Foundation
- Kennedy Center for the Performing Arts
- Loyola Foundation
- National Family Caregivers Association
- National Science Teachers Association
- PICO National Network
- Prison Fellowship International
- Robert Wood Johnson Foundation
- The Papal Foundation
- U.S. Civilian Research and Dev. Foundation
- U.S. Conference of Catholic Bishops
- Winrock International
Business Services
- Estrella
- I Drive Smart
- Fannie Mae
- Lockheed Martin
- Merriweather Post Pavilion
- Minibar Systems
- National Geographic
- Nextrials
- Payroll Network
- Straughan Environmental
- Sundance Publications
- Z-Tech/ICF