X-11 needed for Sun 2. Help!

[Rob Frohne]

I would like to use some Sun 2/50 computers we have here as X-terminals
for the Sparcstations we use here.  We are using version 3.5 of the Sun
operating system for the Sun 2/50's.  Unlike version 4.xx it doesn't
include x-windows.  Is there anywhere I can obtain the software that will
solve my problem.   If so, where?

[[Ed's Note: I don't know if there are any problems in running X11R4 under
your configuration, but the sources for it (X11R4) are publicly available
from a whole slew of places via FTP (including uunet.uu.net). -bdg]]