The Cardspace landing page on MSDN has now a reference (link at the very top) to a PDF copy of the chapter 2 of "Understanding Windows CardSpace", which features the series layout for side comments & perspective boxes (mentioned here). Thanks to everybody who helped making this happen. Enjoy! :-)
Honestly, if I were Gates or Ballmer, I'd fire the next guy who posted a PDF file on any Microsoft site. Has anyone outside the XPS group heard of XPS?