The Image Collections Page is available here:

http://www.healthnet.org/essential-links/image-collections

It lists and describes 8 image collections:

• Google: Image Search
• Health Communication Materials Database (Focus on Low-Income Countries)
• HONmedia
• Images From the History of Medicine
• Medical Images on the Web
• Photoshare (Focus on Low-Income Countries)
• Public Health Resources Library
• Urbana Atlas of Pathology