PubMed Central (PMC) -- "the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature", providing over 400 titles. In addition to current coverage, many titles include older years, such as:
- American Journal of Pathology (1896+)
- American Journal of Public Health (1873+)
- Annals of Surgery (1885+)
- Biochemical Journal (1906+)
- BMJ: British Medical Journal (1840+)
- British Journal of Ophthalmology (1917+)
- CMAJ: Canadian Medical Association Journal (1911+)
- Genetics (1916+)
- Journal of Anatomy (1867+)
- Journal of Bacteriology (1916+)
- Journal of Experimental Medicine (1896+)
- Journal of General Physiology (1918+)
- Journal of Physiology (1878+)
- Journal of the Medical Library Association: JMLA (1898+)
- Journal of the Royal Society of Medicine (1809+)
- Proceedings of the National Academy of Sciences of the U.S.A. (1915+)
- Public Health Reports (1878+)
- Transactions of the American Clinical & Climatological Association (1884+)
- Transactions of the American Ophthalmological Society (1865+)
- Western Journal of Medicine (1902-2002)
Journal of Special Operations Medicine: A Peer Reviewed Journal for SOF Medical Professionals
Military Medical Periodicals (U.S. Army Medical Department Center & School)
- Journal of the U.S. Army Medical Department (Nov 1989-Apr 1994)
- Medical Bulletin (Nov 1970-Oct 1989)
- Medical Bulletin of the U.S. Army Europe (Sep 1952-Oct 1970)
- U.S. Army Medical Department Journal (Sep 1994+)
- U.S. Army Vietnam Medical Bulletin (1966-1971)