I don't care saying what book it is right here, because I've looked for both and came up wanting. It's not available normally as an ebook for purchase, so I have my doubts.

https://www.goodreads.com/book/show/997118.Doktor_Bey_s_handbooks_of_strange_sex

Basically, the IA had it because they scan in masses of texts without even caring what they are. As long as they get a copy and it isn't in the archive yet, they'll scan it in.

FWIW, it's pretty amusing.