http://www.comlab.ox.ac.uk/archive/3d.html
This site presents a collection of 3D and SIRDS (Single Image Random Dot Stereograms) images. Users will find a SIRDS FAQ (Frequenlty Asked Questions) file here, as well as several academic papers that explain the principals of SIRDS images. In addition, this site contains many links to other 3D image archives and sites with information on 3D imaging.