Communications Development Incorporated
- Provides print and multimedia publishing including Web and CD-ROM, design and production, editing and writing, and training workshops. Features news and portfolio.
- http://www.cdinet.com/

Platypus Media
- Publishes books for families, teachers and parenting professionals.
- http://www.platypusmedia.com/

Washington Antiquarian Booksellers Association
- Association of the used, collectible and antiquarian book trade in the Greater Washington DC-Baltimore metropolitan region. Features a searchable directory of booksellers and book listings.
- http://wababooks.com/

Columbia Books
- Publishes information directories for business, government, foundations, lobbying and associations.
- http://www.columbiabooks.com/

Island Press
- A non-profit publisher of books and CD-ROMs on the environment and environmental problems.
- http://www.islandpress.org/

Adler & Robin Books
- Literary agency, book packager and book publisher. Features contests, writing opportunities and resources.
- http://www.adlerbooks.com/

Smithsonian Institution Press
- Non-profit group produces trade and scholarly books that reflect the research interests and collections of the Institution, principally air and space, military history, American studies, anthropology, archaeology, science, and museum studies. Features FAQ
- http://www.sipress.si.edu/

CQ Press
- Specializes in books on politics and American government for the library, college, professional, and government market. Features catalog and subscription services.
- http://www.cqpress.com/

The Bureau of National Affairs, Inc.
- Offers print and electronic news, analysis, and reference products, providing intensive coverage of legal and regulatory developments for professionals in business and government. Features product groups, events, FAQ, press center and employment informati
- http://www.bna.com/

Thompson Publishing Group
- Offers regulatory compliance information for business and government. Features news, help desk, publications and announcements.
- http://www.thompson.com/