Links to other Scratch Holography sites
The following is a list useful links that I have compiled. If you wish to be added to this list, please send me an e-mail.
Wonderful site with detailed explanation of this technique, history, fraquently asked questions, optical principles, e-mail discussion, and so on.
Drawing Holograms using a dremel machine.
Brief explanation of the technique
An interesting 1982 article.
Nice research report about three dimensional representation techniques in general, with an extensive chapter on Scratch Holograms called here "Scratchograms".