Medical Organizations, Scientific Organizations, Government Sites

• DIRLINE
  NLM database containing location and descriptive information about a wide variety of information resources including organizations, research resources, projects and databases concerned with health and biomedicine

• FirstGov.gov
  The official U.S. gateway to all government information, FirstGov.gov provides access to millions of Web pages from federal and state governments

• Federal Health Information Centers and Clearinghouses
  Compiled annually by the National Health Information Center

• MedlinePlus: Organizations
  A collection of organizations providing health information

• Science.gov
  A gateway to authoritative selected science information provided by U.S. Government agencies