Among the artists represented in his collection were Théodore Géricault, Eugène Delacroix, Honoré Daumier, painters of the Barbizon school such as Jean-Baptiste-Camille Corot, Jean-François Millet, Antoine Chintreuil, Gustave Courbet, Édouard Manet, Berthe Morisot, Claude Monet, Pierre-Auguste Renoir, Paul Cézanne, Alfred Sisley, Paul Gauguin and Pierre Puvis de Chavannes.
Kosinski has published on artists including Gustave Courbet, Henri Matisse, and Vincent van Gogh and on various topics in nineteenth and twentieth-century art.
Gustave Flaubert | Gustave Eiffel | Gustave Doré | Gustave Courbet | Courbet | Gustave Kerker | Gustave De Smet | Amédée Courbet | Gustave Caillebotte | Courbet-class battleship | Quai Gustave-Ador | Julien Courbet | James Gustave Speth | Henri-Gustave Joly de Lotbinière | Henri-Gustave Delvigne | Gustave Reese | Gustave J. Stoeckel | Gustave Choquet | Edmond Gustave Camus | ''Courbet'' | ''The Deluge'' by Gustave Doré | Philippe Gustave le Doulcet, Comte de Pontécoulant | Louis Gustave Mouchel | Joel Gustave Nana Ngongang | Institut Gustave Roussy | Gustave Thuret | Gustave Tassell | Gustave Reininger | Gustave Miklos | Gustave Massiah |
The Romantic tendencies continued throughout the century: both idealized landscape painting and Naturalism have their seeds in Romanticism: both Gustave Courbet and the Barbizon school are logical developments, as is too the late 19th century Symbolism of such painters at Gustave Moreau (the professor of Matisse and Rouault) or Odilon Redon.
In Gustave Courbet's painting L'Atelier du peintre she is said to be shown together with her longtime lover, the Belgian tycoon Alfred Mosselman (1810-1867).
The rise of the Neoclassical art of Jacques-Louis David ultimately engendered the realistic reactions of Gustave Courbet and Édouard Manet leading to the multi-faceted figurative art of the 20th century.
The rugged scenery of the Pays de Caux, within a comparatively short distance from Paris, encouraged artists, including Claude Monet and Gustave Courbet to travel there to paint.
The museum displays paintings by painters such as Rembrandt, Rubens, Nicolas Poussin, Claude Gellée, Fragonard, Hubert Robert, Greuze and a remarkable collection of 19th-century painting and sculpture: Ingres, Géricault, Delacroix, Courbet, Monet, Sisley, Pissarro, Cézanne, Modigliani, Carpeaux, Maillol, Rodin etc.
La rencontre, an 1854 painting by Gustave Courbet nicknamed "Bonjour, Monsieur Courbet"