All nine were painted by Margaret Brundage, who was the most popular of Weird Tales’ cover artists. She was known for her images depicting bondage and flagellation of women. Authors would insert unnecessary scenes depicting nude women being tortured or whipped to ensure their story got the cover of an issue.
I love the comments at wiki about her “using her daughters” as models. Offhand, I can only presume these men never saw a picture of Brundage, as, judging from the picture of her at Wiki, she used herself as a model. Her face certainly resembles that of her heroines. Look at both the head shot of her at Wiki and the face of her heroines on both the Weird Tales and Oriental Tales covers at the wiki. They both have a strong resemblance to her. Many of the girls, both the good and the bad, on the covers above also show a similar resemblance.
une veritable petite merveille d”un travail remarquable merci pour ce grand moment