“La sentinelle de Thérèse” (The Sentinel of Therese), two soldiers discussing, bears a handwritten note at the bottom “if you feel like sneezing, you will go under the window of the old man who stole a little bread”, signed Hermann-Paul.

René Georges Hermann Paul, known as Hermann-Paul, born in Paris in 1864 and died in Saintes-Maries-de-la-Mer in 1940, is a French painter and illustrator.
Coming from a family of Provençal origin, the son of a doctor, he quickly abandoned scientific studies to enter the Ecole des Arts Décoratifs in Paris, then the Académie Jullian. From 1890, he produced lithographs in black and white or in color, in the company of Toulouse-Lautrec, Pierre Bonnard and Edouard Vuillard.
He worked for several satirical or libertarian works, and shared the ideas of anarchist movements. At the end of 1892, he founded the short-lived satirical magazine La Faridondaine. At the beginning of 1894, he became one of the contributors to the magazine Le Courrier français. He was also an illustrator for the famous magazine L’Assiette au beurre, and for Le Sourire. Thadée Natanson, the editor of La revue blanche, published a collection of his drawings.
After having been a fierce defender of Dreyfus, both in Le Figaro and in Le Cri de Paris, denounced the misdeeds of colonialism, and defended pacifism during the First World War, he turned to the extreme right and his magazine Je suis partout.

At the end of his life, he retired to Saintes-Maries-de-la-Mer.

Bibliography
Hermann-Paul. Hermann-Paul. Paris: Société d’édition et de publications Librairie Félix Juven, 1907
Geiger, Raymond et al. Hermann Paul. Paris: Henri Babou, 1929
Bourrelier Paul-Henri, and Bourrelier Paul-Henri. 1894-1905, from Montmartre to the Madeleine [Printed text]: La Revue blanche and the Cri de Paris: Valloton, Hermann-Paul-Cappiello… [catalogue]. Paris: P.-H. Bourrelier, 2007

Some auction results:

Ader, Paris, May 29, 2024: Mademoiselle Polaire, c.1910, color lithograph, 32.5 x 49.8 cm, € 780
Ferri et Associés, Paris, March 22, 2024: Conversation mondaine au salon, c. 1897, gouache and pastel on paper, 37 x 46 cm, € 2,974
Ossenat, Fontainebleau, October 25, 2020: Reading, watercolor drawing, 20 x 20.5 cm, € 725
Ossenat, Fontainebleau, October 25, 2020: Woman sitting in front of the fireplace, watercolor drawing, 20.5 x 20.5 cm, € 600
Piasa, Paris, April 11, 2001, Elegant on the beach, watercolor drawing and colored pencils, 47 x 55 cm, € 3,049
Poster Auctions International, New York, May 3, 1998, Wilburg Wright, 1908, color lithograph, 43 x 34 cm, € 1,880 ($ 2,500)