Twin directories of RCS:

[DIR]  ftp://ftp.sds.lcs.mit.edu/pub/AF/RCS/
[DIR]  ftp://ftp.sds.lcs.mit.edu/pub/mail-archive/harp/RCS/
[DIR]  ftp://ftp.sds.lcs.mit.edu/pub/mail-archive/mit89/RCS/
[DIR]  ftp://ftp.python.jp/ftp.python.org/python/contrib-09-Dec-1999/All/RCS/
[DIR]  ftp://ftp.python.jp/ftp.python.org/python/contrib-09-Dec-1999/Database/RCS/
[DIR]  ftp://ftp.python.jp/ftp.python.org/python/contrib-09-Dec-1999/Porting/RCS/
[DIR]  ftp://ftp.python.jp/ftp.python.org/python/contrib-09-Dec-1999/RCS/
[DIR]  ftp://ftp.squid-cache.org/pub/Scripts/RCS/
[DIR]  ftp://ftp.squid-cache.org/pub/squid-2/RCS/
[DIR]  ftp://ftp.mimuw.edu.pl/mirror/ftp.redhat.com/pub/redhat/linux/6.2/en/doc/HOWTOS/translations/ko/koreanDoc/html/RCS/
[DIR]  ftp://ftp.qucis.queensu.ca/pub/dalamb/courses/hide322/RCS/
[DIR]  ftp://ftp.qucis.queensu.ca/pub/dalamb/java/small/RCS/
[DIR]  ftp://ftp.qucis.queensu.ca/pub/software-eng/www/blurb/RCS/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/authors/id/R/RC/RCS/
[DIR]  ftp://ftp.eenet.ee/doc/LDP/linuxfocus/common/RCS/
[DIR]  ftp://ftp.eenet.ee/doc/LDP/linuxfocus/Deutsch/November1999/RCS/
[DIR]  ftp://ftp.eenet.ee/doc/LDP/linuxfocus/Deutsch/RCS/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/docs/linux-doc-project/linuxfocus/common/RCS/
[DIR]  ftp://134.121.1.1/.snapshot/nightly.3/pub/gnu/windows/emacs/docs/ntemacs/contrib/RCS/
[DIR]  ftp://134.121.1.1/pub/gnu.OLD/windows/emacs/docs/ntemacs/contrib/RCS/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/projects/charity/examples/misc/RCS/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/projects/charity/examples/prelude/RCS/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/authors/id/R/RC/RCS/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/docs/LuCaS/LinuxFocus/pub/mirror/LinuxFocus/common/RCS/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/authors/id/R/RC/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/bht/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/bin/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/hlp/bre/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/hlp/eng/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/hlp/ger/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/hlp/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/lib/menu/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/support/tcltexed/lib/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/tools/zoo/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/indexing/makeindex/src/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/Mail/majordomo/stable/RCS/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/Linux/Docs/LuCaS/LinuxFocus/pub/mirror/LinuxFocus/common/RCS/
[DIR]  ftp://ftp.aoc.nrao.edu/pub/software/aips/31DEC00/RCS/
[DIR]  ftp://ftp.aoc.nrao.edu/pub/software/aips/31DEC01/RCS/
[DIR]  ftp://aeneas.mit.edu/pub/gnu/windows/emacs/docs/ntemacs/contrib/RCS/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/authors/id/R/RC/RCS/
[DIR]  ftp://ftp.kfki.hu/pub/packages/mail/majordomo/RCS/
[DIR]  ftp://62.128.1.71/pub/CPAN/authors/id/R/RC/RCS/
[DIR]  ftp://ftp.rdc.cl/pub/Unix/Linux/Perl/CPAN/authors/id/R/RC/RCS/
[DIR]  ftp://ftp.cs.purdue.edu/pub/RCS/
[DIR]  ftp://ftp.kreonet.re.kr/tools/network/squid/Scripts/RCS/
[DIR]  ftp://ftp.kreonet.re.kr/tools/network/squid/squid-2/RCS/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/tgif/contrib/tgif-eps/RCS/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/tgif/tools/pstoepsi/RCS/
[DIR]  ftp://ftp.kreonet.re.kr/tools/benchmark/stream/Code/RCS/