What's that old ass illuminati handbook-type book (1920's?) called?

I can't remember and I can't find it.

There's only a few copies of it out there, but we've talked about it several times here.

It's called something like Book 7, or Manual 7, or something like that.

Something with a number, might not be 7.

Cmon guys help me out.

I might buy a $1k book