We have been told that you can find mirrors of
ftp://mirror.cs.wisc.edu/pub/mirrors/ghost/on the following sites:
The Comprehensive TeX Archive Network (CTAN) maintains a mirror of ftp://mirror.cs.wisc.edu/pub/mirrors/ghost/ as /support/ghostscript on the following sites:
Some files are available in the Ghostscript project at SourceForge.