Le Valet de Carreau 

This illustration, "Le Valet de Carreau", is by Théophile Alexandre Steinlen, a French artist known for his Art Nouveau style. It depicts a fantastical scene where a knight rides a horse through a crowd of people, carrying a woman in a white dress. The knight is wearing a suit of armor with a red and white pattern, and the horse is decorated with red spots. In the background is a castle, and the scene is framed by a border of black silhouettes of cats and a banner proclaiming the knight as "Le Valet de Carreau" ("The Jack of Diamonds"). The image is a testament to Steinlen's ability to blend historical and fantastical elements, making it a captivating and unique work of art.