A self-portrait by the artist Huguette Clark.

Detail of a self-portrait by Huguette Clark.

A painting by Huguette Clark of her view down Fifth Avenue toward the Empire State Building and the GE Building, with a Japanese lamp in the foreground.

Detail of a painting by Huguette Clark of her view down Fifth Avenue toward the Empire State Building and the GE Building, with a Japanese lamp in the foreground.

Detail of a painting by Huguette Clark.

Believed to be a self-portrait, this unsigned painting shows Huguette Clark in her 20s. At a time when most women painted with pastels, Huguette was a serious art student, mixing her own oil paints.

Believed to be a self-portrait by Huguette Clark.

Huguette used as her Christmas card one year a print of this painting of a Japanese woman walking in the snow.

A black-and-white photo of a Christmas card painted by Huguette Clark.

A blooming night cereus by Huguette Clark.

A painting by Huguette Clark of a Japanese woman.

Detail of a painting by Huguette Clark of a Japanese woman.

Detail of a painting by Huguette Clark of a Japanese woman.

A painting of a Japanese bridge by Huguette Clark.

Detail of a painting of a Japanese bridge by Huguette Clark.

A painting of a Japanese castle by Huguette Clark.

Detail of a painting of a Japanese castle by Huguette Clark.

A painting by Huguette Clark of a Japanese woman smoking.

Detail of a painting by Huguette Clark of a Japanese woman smoking.

A painting by Huguette Clark of a Japanese woman.

Detail of a painting by Huguette Clark.

A snapshot of a painting by Huguette Clark, stacked among others in her Fifth Avenue apartments.

A snapshot of a painting by Huguette Clark, stacked among others in her Fifth Avenue apartments.

A painting by Huguette Clark, found in a shop in London.

Detail of a painting by Huguette Clark, found in a shop in London.

Detail of a painting by Huguette Clark, found in a shop in London.

Another view of the Manhattan skyline from Huguette's window.