ftp.funet.fi:
pub/sci/math/misc/jacal/
 -Symbolic mathematics system written in Scheme by Aubrey Jaffer
 -take also Scheme from the original site
 -altdorf.ai.mit.edu:archive/scm/
 -altdorf.ai.mit.edu:archive/jaffer/ seems to contain zip-files, but
  they are not all as new as in archive/scm/ directory... hmm.. why?