Edgar Degas, "The Dance Class," c. 1873, from the William A. Clark Collection.

Detail of Edgar Degas, "Dancer Making Points," a $10 million painting stolen from Huguette Clark while she lived for 20 years in a hospital in New York. It was discovered on the wall of collector Henry Bloch in Kansas after he bought it from a New York gallery. In a settlement, Huguette Clark agreed to give the painting to Bloch's favorite museum in Kansas City, to avoid publicity for them both.

Detail of Edgar Degas, "Dancer Making Points," a $10 million painting stolen from Huguette Clark while she lived for 20 years in a hospital in New York. It was discovered on the wall of collector Henry Bloch in Kansas after he bought it from a New York gallery. In a settlement, Huguette Clark agreed to give the painting to Bloch's favorite museum in Kansas City, to avoid publicity for them both.

Paul Cézanne's "Madame Cézanne in a Red Dress," c. 1890, a painting owned by Huguette Clark's mother, Anna, who sold it one afternoon and used the money to buy four instruments by Stradivari, which she lent to form the world-famous Paganini Quartet.

A Corot from the collection of W.A. Clark. It hung in Huguette Clark's childhood home, the Clark mansion on Fifth Avenue in New York.

A Cuyp from the collection of W.A. Clark. It hung in Huguette Clark's childhood home, the Clark mansion on Fifth Avenue in New York.

A Gainsborough from the collection of W.A. Clark. It hung in Huguette Clark's childhood home, the Clark mansion on Fifth Avenue in New York.

A Gainsborough from the collection of W.A. Clark. It hung in Huguette Clark's childhood home, the Clark mansion on Fifth Avenue in New York.

A Sargent from the collection of Huguette Clark, showing a young woman dancing the tarantella for a man on a rooftop in Capri. From the collection of Huguette Clark.

A William Merritt Chase painting of Prospect Park in Brooklyn, from the collection of Huguette Clark.

A Monet painting of three trees in gray weather from the collection of Huguette Clark.

A Monet "water lilies," which recently sold for $24 million, from the collection of Huguette Clark. It had been unseen in public for 80 years.

A Cézanne painting of a stoneware pitcher, sold by Huguette Clark to give more gifts to her friends.

A Renoir painting of a woman with an umbrella, from the collection of Huguette Clark.

A Renoir painting of a woman in a garden, "In the Roses," sold by Huguette Clark for $23.5 million to raise cash so she could give more gifts to her friends.

A Renoir painting of chrysanthemums, from the collection of Huguette Clark.

A Renoir painting of women playing badminton, from the collection of Huguette Clark.

A Sargent painting of a woman fishing, from the collection of Huguette Clark.

This portrait of George Washington by Stuart hung in W.A. Clark's home office in the Clark mansion on Fifth Avenue, his daughter Huguette's childhood home.

A Van Gogh that hung at Belllosguardo in the early days, "Still Life: Vase with Oleanders and Books."

This is the painting by Édouard Manet that Huguette Clark gave to Beth Israel Medical Center in 2000. As described in Empty Mansions, Huguette Clark surprised the hospital by having "Peonies in a Bottle" ("Pivoines dans une Bouteille") delivered to the hospital president. Appraised at $6 million, the Manet sold in 2001 at Christie's for $3.5 million.