Théophile Steinlen's art can be found in numerous collections, mainly in France and Switzerland. In France, several museums in Paris hold his works; these include the Musée des Arts Décoratifs^[2], the Musée du Louvre, the Musée Gustave Moreau, the Musée National d’Art Moderne (Centre Georges Pompidou), the Musée d’Orsay, the Musée du Petit Palais, and the Musée Rodin. Outside Paris, you can find Steinlen's pieces in the Musée des Beaux-Arts in Nancy, the Musée des Beaux-Arts Jules Cheret and the Musée Matisse in Nice, and the Musée d’Art et d’Industrie in Saint Etienne. Other French museums include those in Albi, Besançon, Dijon, Douai, Grenoble, Le Puy, Lille, Moulins, Nantes, Orléans, Quimper, Reims, Rennes, Rouen, Saint Germain-en-Laye, Saint Tropez, Senlis, Strasbourg and Toulouse. In Switzerland, museums holding Steinlen's work include the Kunstmuseum in Basle, the Kunstmuseum and the Gottfried Keller Stiftung in Berne, the Petit Palais in Geneva, the Kunstmuseum in Winterthur, and the Kunsthaus in Zurich.

Théophile Steinlen (1859-1923) was a Swiss-born French artist associated with the bohemian Montmartre area of Paris. He is best known for his posters, illustrations, and prints. Steinlen's printmaking encompassed various techniques, including lithography and etching. His prints often depicted scenes of Parisian life, with a particular focus on the working class, poverty, and social issues. Cats were also a recurring subject in his art. Like his friend Toulouse-Lautrec, Steinlen created posters for the cabaret Le Chat Noir. His earlier posters are more stylised; later, he adopted a looser, more painterly approach. Steinlen's prints appeared in publications such as *Le Mirliton* and *Gil Blas*. He also illustrated books, including works by Aristide Bruant. His style is characterised by strong lines, expressive figures, and a realistic approach. Steinlen's prints provide insight into the social and political climate of late 19th- and early 20th-century France, offering a critical commentary on urban life and the struggles of ordinary people.

Théophile Steinlen's art retains importance due to his social commentary and distinctive style. Steinlen (1859-1923) is best known for his posters, illustrations, and prints. These works often depicted Parisian life, particularly the lives of the working class. His images of poverty, labour unrest, and social inequality provide historical insight into Belle Époque France. Steinlen's compassionate portrayals of marginalised people, such as street vendors and the unemployed, offer a counterpoint to more glamorous depictions of Paris at the time. Steinlen's style is characterised by strong lines, simplified forms, and a muted colour palette. His compositions are often dynamic, conveying a sense of movement and energy. He was influenced by Japanese prints, which is evident in his use of flattened perspective and bold outlines. Steinlen's work also demonstrates an interest in Art Nouveau, though his approach is more restrained than some of his contemporaries. His poster designs, especially those for the cabaret Le Chat Noir, are iconic examples of fin-de-siècle advertising art. These images helped to popularise the cabaret and solidify Steinlen's reputation as a leading artist of his era. His images continue to be reproduced and studied for their artistic merit and historical value.

Théophile Steinlen was a prolific printmaker and illustrator. He worked in various media, including lithography, etching, drypoint, and wood engraving. Steinlen's early work included illustrations for books and magazines. He became known for his posters, especially those created for the cabaret Le Chat Noir in Paris. These posters often featured bold lines and flat colours, typical of the Art Nouveau style. Lithography was a favoured technique, allowing him to create images with subtle tonal variations and a wide range of effects. He often drew directly on the lithographic stone, giving his prints a spontaneous and sketch-like quality. Steinlen also experimented with colour lithography, producing posters and prints in multiple colours. In addition to his printmaking, Steinlen was a skilled draughtsman and painter. He created numerous drawings in pen, ink, and charcoal, as well as paintings in oil and watercolour. His subject matter ranged from scenes of Parisian life to portraits and animal studies, particularly cats, which were a recurring motif in his work.

Théophile Steinlen's impact is noticeable in the work of later artists who engaged with similar themes and styles. His concentration on urban life, particularly the experiences of the working class, influenced many. Some artists, such as Jules-Alexandre Grün, adopted Steinlen's approach to poster design. Steinlen's posters, often created for Le Chat Noir cabaret, became well known throughout Paris. His ability to capture the energy of the city and its inhabitants resonated with the public. Later artists working in illustration and printmaking also owe a debt to Steinlen. His simplified style and social commentary influenced the development of these fields. Steinlen's images of poverty and social inequality encouraged other artists to use their work as a form of activism. His work helped to pave the way for future generations of socially conscious artists.

Théophile Steinlen, born in Lausanne in 1859, settled in Paris and became a significant graphic artist. He was closely associated with the Montmartre cabaret scene and its publications. It is noted that Picasso's painting has been compared to the work of Toulouse-Lautrec. One accessible source that may reflect Lautrec's painting for Picasso could have been Steinlen's cover for *Gil Blas illustré*, which appeared under the caption "Au bal du 14 juillet, par Jacques Crepet". This cover featured a night scene with lights and dancing couples. It included female figures in the left foreground. The colours were predominantly black with red, yellow, and white. Picasso's knowledge of *Gil Blas* before his Paris visit is well documented. Steinlen was a dedicated anarchist. Much of his work addresses social injustices.

It is difficult to name one single work as Théophile Steinlen's 'most famous', but he is best known for his posters and illustrations, particularly those featuring cats. Steinlen produced a considerable number of posters for the Parisian cabaret Le Chat Noir (The Black Cat). These works, executed in a style that combined elements of Impressionism and Art Nouveau, gained widespread attention and helped to solidify his reputation. Beyond his commercial work, Steinlen created illustrations for books and journals, often depicting scenes of urban life and social issues. These images offered a commentary on the realities of poverty and inequality in Paris at the time. Although he produced paintings and sculptures, Steinlen's graphic work had the most impact.

Théophile Steinlen (1859-1923) is usually associated with Art Nouveau, although his work also shows Realist and social-commentary influences. He created posters, illustrations, and paintings. Steinlen's stylistic associations are complex. He engaged with the aesthetics of Art Nouveau, seen in his flowing lines and decorative elements; however, his subject matter often reflected Realist concerns. He depicted ordinary people, especially those from working-class communities in Montmartre. These images of daily life align him with the Realist tradition popularised by artists like Gustave Courbet. His prints and drawings frequently carried social and political messages. He used his art to comment on issues such as poverty, inequality, and political corruption. This element of social critique connects him to movements concerned with representing social realities, even while employing an Art Nouveau visual style. Steinlen's diverse output resists simple categorisation, placing him at the intersection of several artistic tendencies of his time.