Food for thought:
=================
CAGD:
- http://softsurfer.com/algorithms.htm
- Guru's Lair Cubic Spline Library 
  http://www.tinaja.com/cubic01.html
- Graphics Gems Repository
  http://www.acm.org/tog/GraphicsGems/
- General polygon clipper library (gpc)
  http://www.cs.man.ac.uk/~amurta/software/index.html
- Magic Software
  http://www.magic-software.com/
- FAQ for comp.graphics.algorithms:
  http://www.landfield.com/faqs/graphics/algorithms-faq/
- NEC Research Index
  http://citeseer.nj.nec.com/cs
- Preprints
  http://xxx.lanl.gov/archive/cs/intro.html
- Graphics Paper
  http://www.graphicspapers.com/

Postscript:
- Adobe Illustrator Fileformat Specification:
  http://partners.adobe.com/asn/developer/PDFS/TN/5007.AI7FileFormat.pdf
- Postscript Specs (since .AI is basically .PS):
  http://partners.adobe.com/asn/developer/technotes.html#postscript