You can use anonymous FTP to retrieve Netlib files. Ftp to netlib2.cs.utk.edu and log in as anonymous. Use your complete email address as the password.
The Netlib ftp server supports automatic creation of compressed and/or tarred versions of files and directories. Just ask for <filename>.Z instead of <filename>, or <directory>.tar.Z instead of each file in the directory, and it gets packaged up on the fly.