So I have been working on finding old bookcovers with bondage art. These come from various artists:

Der Hexenhammer, 1934
Cinglants Chatiments, 1932
La Madone du Cuir Verni, 1937
La Reine Cravache, 1932
Le Cuir Triomphant, 1934
Esclaves Modernes, 1922
Servitude, 1934
La Maison des supplices, 1932
Qui Aime Bien, 1916
L’Infernale Fouetteuse, 1935