A work made of oil on canvas.

The Valley of Les Puits-Noir, 1868

Gustave Courbet

A work made of oil on panel.

A Lady Reading (Saint Mary Magdalene), c. 1530

Master of the Female Half-Lengths

A work made of oil on canvas.

Red and Pink Rocks and Teeth, 1938

Georgia O'Keeffe

Painted portrait of woman in green dress and cloud backdrop.

Mrs. Daniel Hubbard (Mary Greene), c. 1764

John Singleton Copley

A work made of oil on canvas.

Hogs Killing a Snake, c. 1930

John Steuart Curry

A work made of oil on canvas.

Wall Painting with Stripes, 1944

Robert Motherwell

Painted dark colored portrait of man, hands in prayer.

Portrait of Jean Gros (recto); Coat of Arms of Jean Gros (verso), 1460–64

Rogier van der Weyden

A work made of acrylic and silkscreen ink on linen.

Liz #3 [Early Colored Liz], 1963

Andy Warhol

A work made of oil on canvas.

Street in Moret, c. 1890

Alfred Sisley

A work made of oil on canvas.

Portrait of Jeanne Wenz, 1886

Henri de Toulouse-Lautrec

In a beige room, a group of light-skinned men of various ages and a young boy clap as a figure in tattered clothing at center, his back to the viewer, dances and holds a tin cup in the air. At dark figure in shadows looks on from the far-right corner.

Bar-room Scene, 1835

William Sidney Mount

A work made of oil on paper, mounted on canvas.

Study of Pigs, c. 1855

Alexandre Gabriel Decamps

Interior of warm colored room, woman sits on balcony, ocean behind her.

Interior at Nice, 1919 or 1920

Henri Matisse

Painting of black and tan cattle lying on short, green grass with a cloudy mountain top view behind them.

Cattle at Rest on a Hillside in the Alps, 1885

Rosa Bonheur

A work made of oil on canvas.

Landscape (The Lock), c. 1820–25

John Constable

A work made of oil on canvas.

On a Balcony, 1878–79

Mary Cassatt

A man with sparse brown facial hair stands in a full-length black robe on a multicolored tiled floor, a white and brown dog behind him.

Gian Lodovico Madruzzo, 1551/52

Giovanni Battista Moroni

A work made of oil on canvas.

Portrait of the Artist, c. 1820/30

John Jackson

A work made of oil on canvas.

Still Life with Flowers, 1905

Odilon Redon

A work made of oil on linen canvas.

Woman in Front of a Still Life by Cezanne, 1890

Paul Gauguin