MedlinePlus from the National Library of Medicine
The Merck Manuals Online Medical Library versions for medical professionals and for consumers
Physician's Desk Reference PDR Network
DSM-5 Diagnostic and Statistical Manual of Mental Disorders. Fifth edition 2013.
Cultural Competence Resources for Health Care Providers from the US Dept. of Health and Human Services
Literature Reviews: An Overview for Graduate Students from North Carolina State University
From the National Library of Medicine:
MedPix from the National Library of Medicine. a free open-access online database of medical images, teaching cases, and clinical topics
AnatomyEXPERT Anatomy library with an A-Z index of structures
Human Body Maps From Healthline, a free, interactive anatomy program that provides access to high-quality medical images.
Smart Image Database (Scientific and Medical Art) from EBSCO. Illustrations and animations depicting anatomy, physiology, surgery, diseases, conditions, trauma, embryology, histology, and other health science topics.