What is the title of Georgia O'Keeffe's 1931 painting of a large white skull?

Georgia O'Keeffe's 1931 painting of a large white skull is titled Cow's Skull: Red, White, and Blue.

The painting presents a sun-bleached cow skull against a red, white, and blue field. O'Keeffe found animal bones in the New Mexico landscape and treated them as enduring forms rather than merely as symbols of death. Their strong contours and pale surfaces suited her close-up, simplified compositions.

The patriotic colors connect the object to the visual language of the United States, while the skull's weathered condition evokes the harsh Southwestern environment. O'Keeffe's bone paintings are often discussed alongside her flowers because both subjects enlarge and isolate natural forms.

The title specifies a cow's skull, not a ram's head or a generic human skull. That distinction matters: O'Keeffe painted many bones and skulls, but the named work's subject and color scheme are precisely identified in its title.