Twin directories of X11R6:

[DIR]  ftp://ftp.uni-leipzig.de/pub/X11R6/
[DIR]  ftp://ftp.mimuw.edu.pl/mirror/ftp.redhat.com/pub/redhat/linux/6.2/en/os/sparc/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.linux.ncsu.edu/pub/realmlinux/realmkit-7.0/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.linux.ncsu.edu/pub/ncsuscyld/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.linux.ncsu.edu/pub/realmlinux/realmkit-6.2/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/9.0/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/official/10.1/i586/install/stage2/live/usr/X11R6/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/official/10.0/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/9.2/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/9.1/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.x.org/pub/X11R6/
[DIR]  ftp://ftp.x.org/contrib/docs/motif_quick_ref/specs/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/cooker/amd64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/cooker/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/cooker/ppc/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/9.2/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/9.1/ppc/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/10.0/amd64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/9.1/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/cooker/amd64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/cooker/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/cooker/ppc/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/9.2/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/9.1/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/9.1/ppc/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/10.0/amd64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/cooker/amd64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/cooker/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/cooker/ppc/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/9.2/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/9.1/i586/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/9.1/ppc/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/10.0/amd64/Mandrake/mdkinst/usr/X11R6/
[DIR]  ftp://ftp.kde.org/pub/kde/Attic/3.3.1/contrib/Solaris/FORTE/8/X11R6/
[DIR]  ftp://ftp.kde.org/pub/kde/Attic/3.3.1/contrib/Solaris/FORTE/9/X11R6/
[DIR]  ftp://ftp.wu-wien.ac.at/pub/src/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/windows/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/en/os/alpha/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/en/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/ja/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/tc/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/it/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/ja/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/fr/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/de/os/i386/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/en/os/alpha/RedHat/instimage/usr/X11R6/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/en/os/i386/RedHat/instimage/usr/X11R6/