It’s such a shame that the Common Lisp community has to rely on archive.org so much. I remember working with others to recover (IIRC) https://wiki.alu.org/ from archive.org after... something.
In fact, it loks like it’s inaccessible now, at least in my browser. Google does have some pages indexed though: https://www.google.com/search?q=site%3Aalu.org