List of sites (intended for computer vision use) from CMU.

The history of one of the most well-known test images: Lena Sjooblom.

Database of facial expression images freely available for research purposes.

Information about Lena Soderberg (née Sjööblom) and the history of the famous test image.

The Visible Human Project has many medical images.

A collection of digitised images in TIFF format. Catalogue in PDF. Previews and images free on-line, database on magnetic tape can be purchased.