ftp.nice.ch/pub/next/text/tex/teTeX/distrib/sources/teTeX-src-0.4.tar.gz#/teTeX-src-0.4/makeindex-2.12/lib

idxmac-amstex.tex
 

idxmac.tex
 

makeidx.doc
 

makeidx.sty
 

showidx.sty
 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.