National Institute on Drug Abuse
- The mission of NIDA is to lead the Nation in bringing the power of science to bear on drug abuse and addiction.
- http://www.drugabuse.gov/

National Institutes of Health (NIH)
- NIH is one of the world's foremost medical research centers. An agency of the U.S. Department of Health and Human Services, the NIH is the Federal focal point for health research.
- http://www.nih.gov/

National Library of Medicine (NLM)
- The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world's largest medical library.
- http://www.nlm.nih.gov/