What 1931 Georgia O'Keeffe painting shows a steer skull against the American flag's colors?

Georgia O'Keeffe's 1931 painting showing a steer skull in the American flag's colors is Cow's Skull: Red, White, and Blue.

The oil painting places a weathered cow skull against a field of red, white, and blue. O'Keeffe encountered animal bones in the New Mexico landscape and treated them as powerful formal subjects, emphasizing their contours, openings, and stark contrast with the sky or background.

The title directly identifies the painting's central visual idea: the skull is presented with colors associated with the United States. O'Keeffe did not paint the object as a conventional natural-history study. Instead, she enlarged and isolated it so that a familiar desert remnant became monumental and symbolic.

This work belongs to her New Mexico period, when bones, crosses, adobe structures, and distant hills appeared repeatedly. It should not be confused with her Ram's Head paintings, which use a different animal skull and belong to a related but separate group.