Twin directories of vols:

[DIR]  ftp://ftp.efo.ru/pub/vols/
[DIR]  ftp://ftp.zenez.com/pub/SCO/skunkware/osr5/vols/
[DIR]  ftp://ftp.zenez.com/pub/SCO/skunkware/osr6/vols/
[DIR]  ftp://ftp.blm.gov/pub/communique/wyweb/vols/