Twin directories of 1990:

[DIR]  ftp://ftp.cs.rutgers.edu/pub/hirsh/papers/1990/
[DIR]  ftp://ftp.ips.gov.au/wdc-data/spec/spectrograph event logs/culgoora/1990/
[DIR]  ftp://ftp.ips.gov.au/wdc-data/riometer/data/maw/1990/
[DIR]  ftp://ftp.ips.gov.au/wdc-data/riometer/data/mcq/1990/
[DIR]  ftp://ftp.ips.gov.au/wdc-data/riometer/data/cas/1990/
[DIR]  ftp://ftp.ips.gov.au/wdc-data/riometer/data/dav/1990/
[DIR]  ftp://ftp.ips.gov.au/data/Products and Services/Monthly Reports/1990/
[DIR]  ftp://ftp.psg.com/pub/lists/1990/
[DIR]  ftp://ftp.niwa.co.nz/tropac/co2/bhd/1990/
[DIR]  ftp://ftp.ripe.net/ripe/tools/bind/mail-archive/1990/
[DIR]  ftp://ftp.iszf.irk.ru/ssrt/bursts/1990/
[DIR]  ftp://ftp.cs.wisc.edu/pub/techreports/1990/
[DIR]  ftp://ftp.cs.washington.edu/tr/1990/
[DIR]  ftp://ftp.hitl.washington.edu/pub/scivw/conferences/1990/
[DIR]  ftp://ftp.hitl.washington.edu/pub/scivw/postings/1990/
[DIR]  ftp://ftp.stsci.edu/pub/stsci/newsletters/1990/
[DIR]  ftp://ftp.diku.dk/diku/semantics/conferences/1990/
[DIR]  ftp://ftp.tnt.uni-hannover.de/pub/papers/1990/
[DIR]  ftp://ftp.uni-stuttgart.de/pub/systems/acorn/riscos/ftp.acorn.co.uk/documents/acornusr/1990/
[DIR]  ftp://ftp.cs.iastate.edu/pub/tech_reports/1990/
[DIR]  ftp://cdsarc.u-strasbg.fr/1/catj.old/J/AJ/128/1990/
[DIR]  ftp://cdsarc.u-strasbg.fr/1/OD/cd30/J/AJ/128/1990/
[DIR]  ftp://cdsarc.u-strasbg.fr/0/catj/J/AJ/128/1990/
[DIR]  ftp://ftp.cs.kuleuven.be/pub/Ada-Belgium/mirrors/pal/ajpo/news/quarterly/1990/
[DIR]  ftp://ftp.amigascne.org/mirrors/ftp.modland.com/pub/documents/nostalgia/magazine scans/DMZ/1990/
[DIR]  ftp://ftp.amigascne.org/mirrors/ftp.modland.com/pub/documents/nostalgia/magazine scans/SHN/1990/
[DIR]  ftp://ftp.uni-koeln.de/misc/unix-world/grabbag/1990/
[DIR]  ftp://ftp.uni-koeln.de/misc/unix-world/tutorial/1990/
[DIR]  ftp://ftp.cs.york.ac.uk/.snapshot/weekly.2/pub/arch/neural/publications/1990/
[DIR]  ftp://ftp.cs.ubc.ca/local/techreports/1990/
[DIR]  ftp://ftp.rmt.ru/pub/Mirrors/ftp.ripe.net/tools/bind/mail-archive/1990/
[DIR]  ftp://ftp.cs.york.ac.uk/.snapshot/weekly.0/pub/arch/neural/publications/1990/
[DIR]  ftp://ftp.cs.york.ac.uk/.snapshot/weekly.3/pub/arch/neural/publications/1990/
[DIR]  ftp://ftp.cs.york.ac.uk/pub/arch/neural/publications/1990/
[DIR]  ftp://ftp.fas.sfu.ca/pub/cs/TH/1990/
[DIR]  ftp://ftp.fas.sfu.ca/pub/cs/TR/1990/
[DIR]  ftp://ftp.bls.gov/pub/special.requests/ce/aggregate/1990/
[DIR]  ftp://ftp.bls.gov/pub/special.requests/ce/Share/1990/
[DIR]  ftp://ftp.bls.gov/pub/special.requests/cew/1990/
[DIR]  ftp://ftp.bls.gov/pub/special.requests/ce/standard/1990/
[DIR]  ftp://ftp.ics.muni.cz/pub/EMIS/mirror/IMU/General/Prizes/Fields/1990/
[DIR]  ftp://ftp.ics.muni.cz/pub/EMIS/mirror/IMU/General/Prizes/Nevanlinna/1990/
[DIR]  ftp://ftp.ics.muni.cz/pub/EMIS/mirror/IMU/ICM/medals/1990/
[DIR]  ftp://ftp.cs.utk.edu/pub/TechReports/1990/
[DIR]  ftp://ftp.cs.albany.edu/pub/tech-reports/1990/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk3/sun-info/sunflash/1990/
[DIR]  ftp://ftp.rmt.ru/pub/Mirrors/ftp.ripe.net/ripe/tools/bind/mail-archive/1990/
[DIR]  ftp://ftp.lanet.lv/pub/sun-info/sunflash/1990/
[DIR]  ftp://ftp.uar.net/pub/music/Ukrainian/!HOBE/K/Komu vnyz/1990/
[DIR]  ftp://ftp.webapteka.ru/pub/doc/1990/