UpToDate
Evidence-based, peer-reviewed clinical information. 

Laupus Health Sciences Library
Medical library resources available at East Carolina University.

images.MD
Access to 50,000 medical images from more than 90 collections and 2,000 contributors. Available to users of Laupus Library.

Medical Images on the Web (McGoogan Library of Medicine, University of Nebraska Medical Center)
Metasite for searching medical image collections. 

The Yale Medical Image Teaching Collection
Medical images for academic presentations and teaching.

Public Health Image Library (PHIL) (Centers for Disease Control)
Still images, image sets and multimedia files related to public health.