A quick sampling of the other posts on the A Carrefour Etrange blog:
L’Étrange aventure de Miss Alice Simpson by Jean Bustarès, from 1922. No word on the story, but the pictures seem strongly on femsub and whipping. Illustrations by Gaston Smit alias Georges Topfer.
La Comtesse au Fouet (The Countess of Whips) is more of a mixed bag, with both femsub and malesub. Illustrations by Martin van Maele. Originally published 1906.
Les Malheurs de Colette by Aimé van Rod, published in 1914 (reissued 1928) and illustrated by Georges Topfer.