YOu know, I was timing how long it would take for some one to mention Gor...I am surprised it took this long. There is also some bondage in one or two of the Conan books if I remember rightly.
Not read LKH but it does not surprise me if there is bondage in there somewhere. She is one of the authors I need to get round to reading at some point...
There could be an argument for hypnosis domination in Huxley's Brave New World. The 'lower classes' are sleep conditioned to accept their roles as more or less slaves. NOt quite 'erotic BDSM' but still a form of domination.