I've read "Mein Kampf" and bios of Hitler, but I don't remember anything about secret societies or oaths. My copy of "Meing Kampf" doesn't have an index, could you tell me which chapter has the secret society stuff? Thanks.
Lueger was a prominent figure in the underground volkische occult movement.
I'll see if I can find the passage by page in a standard edition.
It's in the penumbra.