From WR (Whip and Rope Publications) comes a title that triggers no confusion: A. deGranamour's MELISSA'S BONDAGE DEBUT.
The author was prolific in this niche, and often branched into erotica with a historical perspective such as SADISTIC PIONEERS.
This also featured pencil drawings by a "Ms. Jackie".
A title that purported to be a serious examination of spanking culture, but was little more than juicy anecdotes.
It always helps to list an M.D. on the cover.
Author G. Bennett Lockwood sounds serious.
"The Well-Spanked Farmgirl" from Wyndham Press (writer not noted), a publisher not affiliated with a similarly-named firm specializing in educational tomes, is adorned with some simple, evocative art. Of course, one could argue that the above is an education.
Again, no author mentioned, although some sources identify the author as Jaime Maran.