They have legendary status but they aren’t very good books. In some cases they are quite misleading. Unfortunately I don’t think there’s anything better out there yet at that level. I remember having to unlearn stuff when I progressed past the very limited explanations.

Electronics as a subject is one of those things that’s really difficult to explain without a basic understanding of maths and he skirts well around that where possible.

If you know how to juggle numbers, probably better to start with The Art of Electronics.