Twin directories of 4.1-RELEASE:

[DIR]  ftp://ftp.sonycsl.co.jp/mirror/FreeBSD-internat/releases/i386/4.1-RELEASE/
[DIR]  ftp://ftp.cse.buffalo.edu/mirror/BSD/FreeBSD-Archive/old-releases/i386/4.1-RELEASE/
[DIR]  ftp://ftp.cronyx.ru/pub/FreeBSD.archive/old-releases/i386/4.1-RELEASE/
[DIR]  ftp://ftp.sol.net/.0/releases/i386/4.1-RELEASE/
[DIR]  ftp://ftp.mtu.ru/.3/FreeBSD-Archive/i386/4.1-RELEASE/
[DIR]  ftp://194.67.80.52/.3/FreeBSD-Archive/old-releases/i386/4.1-RELEASE/
[DIR]  ftp://213.24.208.27/.3/FreeBSD-Archive/old-releases/i386/4.1-RELEASE/
[DIR]  ftp://194.186.254.27/.3/FreeBSD-Archive/old-releases/i386/4.1-RELEASE/
[DIR]  ftp://ftp.mtu.ru/.2/FreeBSD-Archive/i386/4.1-RELEASE/
[DIR]  ftp://ftp.mtu.ru/.2/FreeBSD-Archive/i386/i386/4.1-RELEASE/