...and probably cannot ever be recovered.
As a matter of simple historical fact, in 2014 the owner of the Necrobabes.org domain (Samson Alexae) allowed it to expire rather than turning it over/selling it to any one of several interested individuals. Why this was done has never been explained. Once the domain became available, bids were made on it but failed, as a generic porn site owner - attracted, most likely, by the moderately high traffic and apparently not knowing it was a specialty site - pushed the bid beyond reason.
The parts of the Necrobabes.org domain you see here are for the most part what Peter Cohen, Sam Leo, and Retrotek had on their hard drives. As a consequence of the domain expiration, everything else has been irretrievably lost.