Do archived copies of _OBSOLETE_ ISOs exist?

[Richard Owlett <rowlett@cloud85.net>]

I'm doing a self-education project to answer "How is *nix put 
together?"
Projects whose documentation I have found useful include:
  "Linux From Scratch"      http://www.linuxfromscratch.org/
  "Voyage Linux"            http://linux.voyage.hk/about
  "Debian From Scratch" 
https://web.archive.org/web/20080416005430/http://people.debian.org/~jgoerzen/dfs/html/dfs.html

Right now I'm chasing down links to that later. I've retrieved 
(from lenny archives) dfsbuild_1.0.2.0_i386.deb .  As the oldest 
Debian I have available is Squeeze I can foresee compatibility 
problems as well as learning to use the tools provided by dfsbuild.

Would ISOs of "Debian From Scratch" [*ANY* version] be available 
somewhere (official repository or not)?

TIA