Octavo.com and Albrect Durer
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There's a wonderful company,
Octavo that reproduces rare manuscripts on CDROM. I
actually have a subscription to their CDROM-of-the-month (or
whenever). The one I most recently received is particularly
spectacular. It's a compendum of
two books by Albrecht Dürer on the scientific
principles of art technique. The section on perspective has great
illustrations that would fit well in any book on ray tracing
algorithms.
Everything new is old. The past is filled with great shoulders
to stand on.