| 372KB | Die Anatomie einer Programmiersprache | 1994 | book, 135p | (See Lulu Press, 2006) |
| 1.28MB | Lightweight Compiler Techniques | 1996, 2002 | book, 262p | (See Lulu Press, 2006) |
| 128KB | Logic Programming in Scheme | 2007 | book, 41p | (See Lulu Press, 2007) |
| 29KB | Mini Scheme (+strings, chars etc) | 2009 | program | R4RS Scheme subset |
| 262KB | Scheme 9 from Empty Space | 2008 | book, 130p | (See Lulu Press, 2008) |
| 215KB | Scheme 9 from Empty Space | 2009 | program | R4RS Scheme interpreter |
| 428KB | Sketchy LISP, 3rd. Ed. (PDF) | 2008 | book, 180p | (See Lulu Press, 2008) |
| 140KB | Sketchy LISP, 4th. Ed. (HTML) | 2009 | online book | (See above) |
| 744KB | zen-style programming | 2008 | book, 336p | (See Lulu Press, 2008) |
All of the above stuff is now in the public domain no matter what the license files in the individual packages say. In case your country does not have a concept like the public domain, this means:
-- Nils M Holm, 10/2009