On Sun, 4 Jun 1995, Scott L. Burson wrote:

> Another problem is that I can't rebuild any of my executables that use X11-R5
> libraries, because the latter were compiled under SunOS, and it doesn't work
> to build a NetBSD executable that references SunOS libraries.  As I mentioned
> a few days ago, the SPARC X11-R6 binary distribution on ftp.netbsd.org appears
> to be corrupted.  My other choice would be to rebuild X11-R5 under NetBSD, but
> that looks like a project and a half.

If my memory serves I obtained my copy from 
ftp.luth.se:/pub/NetBSD/arch/sparc/X11R6. You could try that one, it 
worked for me.

Peter