Medicine and Health
Health on the Net -- A leading source of Web-based medical information, includes access to several widely-used medical search engines
Centers for Disease Control and Prevention
HealthLinks -- This is an online health information directory and guide.
Medscape -- Health news and information
MEDLINEplus -- From the NLM, consumer-oriented service providing answers to health questions
MedicineNet -- Information on diseases, procedures, and pharmaceuticals
Merck and The Merck Manuals -- An extensive searchable medical reference work online.
National Health Information Center -- Health information referral service
National Institutes of Health-- Health information and much more
Surgeon General Reports -- Full text PDF copies, covering 1964-2001
TeensHealth -- searchable database
Women's Health Resource Center -- From the Mayo Clinic .
Medical Reference Works
Gray's Anatomy -- Text of the 1918 edition, from Bartleby.com
Medical Dictionary -- Merriam Webster Medical Dictionary
RxList: The Internet Drug Index -- Provides in-depth drug information