[3] Sully is best known for her colored-pencil triptychs and "personality prints," which often depicted celebrities such as Amelia Earhart, Gertrude Stein, and Greta Garbo.

[4] She was the great-granddaughter of the respected 19th-century American portrait artist Thomas Sully, known for capturing the personalities of America’s early celebrities, including the figure of Andrew Jackson immortalized on the twenty-dollar bill.

[5] Her sister, Ella Cara Deloria, was an anthropologist with whom she traveled extensively throughout the United States, visiting many Native communities and observing the art that was integral to their daily lives.

[5] Sully primarily worked in triptychs, three-paneled pieces that often served as "personality prints" of celebrities or public figures.

The central panel reinterprets the first with a kaleidoscopic effect, focusing on and symmetrically arranging elements from the initial design, including three rows of seven oval shapes amid sharp angles.

Despite her innovative approach, Sully's position on the margins of the art world meant that her work was exhibited only a handful of times during her life.