Twin directories of extra-stuff:

[DIR]  ftp://ftp.swin.edu.au/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.slackware.at/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.rz.tu-bs.de/pub/mirror/ALL_primary_servers/rsync/ftp.slackware.com/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://64.50.238.52/.1/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://64.50.236.52/.1/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://147.52.159.12/mirrors/linux/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.uni-wuppertal.de/pub/linux/slackware/slackware-4.0/source/extra-stuff/
[DIR]  ftp://ftp.uni-wuppertal.de/pub/linux/slackware/slackware-3.6/source/extra-stuff/
[DIR]  ftp://ftp.uni-wuppertal.de/pub/linux/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.uni-wuppertal.de/pub/linux/slackware/slackware-3.4/source/extra-stuff/
[DIR]  ftp://ftp.uni-wuppertal.de/pub/linux/slackware/slackware-3.5/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-3.4/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-3.5/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-3.6/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-4.0/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-2.2.0/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-2.3/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-3.1/source/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-2.0.1/slacksrc/extra-stuff/
[DIR]  ftp://ftp.lug.udel.edu/pub/slackware/slackware-2.1/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/slackware-3.4/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/slackware-3.5/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/slackware-3.6/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/slackware-4.0/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/historic/slackware-3.1/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/historic/slackware-2.1/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/historic/slackware-2.2.0/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/historic/slackware-2.3/source/extra-stuff/
[DIR]  ftp://ftp.slackware-brasil.com.br/historic/slackware-2.0.1/slacksrc/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-3.1/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-3.4/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-3.5/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-3.6/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-4.0/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-2.1/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-2.2.0/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-2.3/source/extra-stuff/
[DIR]  ftp://ftp.uni-siegen.de/pub/slackware/slackware-2.0.1/slacksrc/extra-stuff/
[DIR]  ftp://ftp.man.szczecin.pl/pub/Linux/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-3.6/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-4.0/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-2.2.0/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-2.3/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-3.1/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-3.3/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-3.4/source/extra-stuff/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/slackware/slackware-3.5/source/extra-stuff/