There are various archives available at this site.

You are encouraged to mirror these. If you need help with that, ask in the forum. You can also ask Spirit to burn you a DVD or CD and send it to you (if the files fit on it). You can also ask for a big zip/7z/tar with a whole directory archived to save you from clicking if you cannot easily automate it yourself. The webarchive directory is huge (108 Gigabytes at the time of writing) and there are redundant files, you better do not blindly start mirroring it all. It also is quite a mess.

Do treat the server nicely. Do not use more than one connection. Use a wait between downloads. Do not be a bad person.