Twin directories of papers:

[DIR]  ftp://gee.cs.oswego.edu/pub/papers/
[DIR]  ftp://ftp.fgan.de/ids-devel/papers/
[DIR]  ftp://ftp.tm.informatik.uni-frankfurt.de/pub/papers/
[DIR]  ftp://ftp.parc.xerox.com/pub/MOO/contrib/papers/
[DIR]  ftp://ftp.parc.xerox.com/pub/MOO/papers/
[DIR]  ftp://ftp.parc.xerox.com/pub/gc/papers/
[DIR]  ftp://ftp.parc.xerox.com/pub/qca/papers/
[DIR]  ftp://ftp.ox.ac.uk/pub/comp/security/COAST/mirrors/ftp.auscert.org.au/sert/papers/
[DIR]  ftp://ftp.sds.lcs.mit.edu/pub/papers/
[DIR]  ftp://ftp.cs.rutgers.edu/pub/hirsh/papers/
[DIR]  ftp://ftp.cs.rutgers.edu/pub/sven/papers/
[DIR]  ftp://ftp.uni-leipzig.de/pub/ifi/papers/
[DIR]  ftp://ftp.grame.fr/pub/Elody/papers/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/transfer/kg_nrt/nrttrop/papers/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/transfer/kg_igs/igsprod/papers/
[DIR]  ftp://ftp.zoology.ubc.ca/pub/krebs/papers/
[DIR]  ftp://ftp.mimuw.edu.pl/pub/lang/haskel/papers/
[DIR]  ftp://ftp.mimuw.edu.pl/People/grygiel/papers/
[DIR]  ftp://ftp.udel.edu/pub/people/kelleher/worm/papers/
[DIR]  ftp://ftp.udel.edu/pub/people/mills/papers/
[DIR]  ftp://82.96.64.7/pub/linux/kernel/people/mochel/doc/papers/
[DIR]  ftp://82.96.64.7/pub/linux/kernel/people/lethal/papers/
[DIR]  ftp://ftp.research.telcordia.com/pub/laure/papers/
[DIR]  ftp://ftp.research.telcordia.com/pub/mcauley/www/papers/
[DIR]  ftp://ftp.dit.upm.es/pub/vhdl/papers/
[DIR]  ftp://ftp.dit.upm.es/str/gstr/papers/
[DIR]  ftp://ftp.dit.upm.es/str/papers/
[DIR]  ftp://ftp.dit.upm.es/lotos/papers/
[DIR]  ftp://ftp.dit.upm.es/mirrors/cs.nyu.edu/pub/gnat/jgnat/papers/
[DIR]  ftp://ftp.dit.upm.es/mirrors/cs.nyu.edu/pub/gnat/papers/
[DIR]  ftp://ftp.dit.upm.es/linux/mirrors/ftp.gnome.org/teams/docs/papers/
[DIR]  ftp://ftp.mathematik.tu-darmstadt.de/pub/department/software/opti/papers/
[DIR]  ftp://ftp.cs.bgu.ac.il/pub/people/berend/papers/
[DIR]  ftp://ftp.cs.bgu.ac.il/pub/people/shimony/papers/
[DIR]  ftp://ftp.sonycsl.co.jp/pub/OS1/Amoeba/papers/
[DIR]  ftp://ftp.sonycsl.co.jp/pub/kjc/papers/
[DIR]  ftp://ftp.reed.edu/reed/projects/ralife/papers/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/Redirect/grouplab/papers/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/projects/grouplab/papers/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/projects/the.reactive.keyboard/papers/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/users/blob/papers/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/users/qtrinh/papers/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/papers/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/kernel.org/pub/kernel/people/mochel/doc/papers/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/kernel.org/pub/kernel/people/lethal/papers/
[DIR]  ftp://ftp.bath.ac.uk/pub/eespjl/pubgo/papers/
[DIR]  ftp://ftp.mines.edu/pub/papers/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors2/ftp.kernel.org/pub/linux/kernel/people/mochel/doc/papers/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors2/ftp.kernel.org/pub/linux/kernel/people/lethal/papers/
[DIR]  ftp://ftp.cs.ust.hk/pub/cssystem/dominic/papers/