MedEdPORTAL http://www.aamc.org/mededportal
MedEdPORTAL is a free peer-reviewed publication service and repository for medical and oral health teaching materials, assessment tools, and faculty development resources.
The Pathology Education Instructional Resource http://peir.net
The Pathology Education Instructional Resource contains over 40,000 digital images of pathology, radiology, and some normal anatomy/histology. This digital library is free for anyone to use for educational/non-profit purposes. They only ask that we acknowledge the source if we use images.
