Compress.txt and the associated C source files were uploaded
to GEnie from Japan by Kenjirou Okubo.  He provided this short
introduction:

This article by H.Okumura explains various algorithms
of Data Compression. The article, originally uploaded
in his workshop, is posted here with his permission.  Also
includes three C programs illustrating lzari, lzss and
lzhuf methods uploaded with permission of their authors.
These are the compression schemes currently being investigated
by Japanese hobbiest programmers.
              -Kenjirou Okubo