First there was the William F. Soare cover of Mystery Novels and Short Stories, back in November of 1939. No bondage (unless you count the ape), so not really on the Bondage Blog beat, but still a very nice pulp cover:
Much more recently, some enterprising Photoshop-jockey cleaned up the central part of the artwork for our amusement:
But that wasn’t good enough for Dr. Faustus at Erotic Mad Science. As part of his pulp art recreation series, he paid (yes, he actually pays) artist Frans Mensink to re-imagine the scene. Mensink put rope bondage and more nudity into the scene, and swapped out the ugly old man for a bodacious female evil medical assistant:
Good work all around!
Elsewhere on Bondage Blog: