In Mrs. John Redman Coxe (Sarah Cox), Thomas Sully presents a portrait of Sarah Cox, the wife of a prominent physician. The painting features a soft palette of warm colors, primarily rich browns and creams, which create a sense of intimacy.

Sarah is depicted seated, wearing an elegant gown with intricate details, and her expression is serene and composed. The background is a muted landscape that enhances her presence without distracting from it. The painting is executed in oil on canvas, a medium that allows for rich texture and depth. Sully's technique includes delicate brushwork that captures the softness of Sarah's features and the fabric of her dress.

The dimensions of the artwork are approximately 76 x 63.5 cm, making it a substantial portrait that commands attention. The use of light and shadow adds dimension to her face, highlighting her gentle expression. Thomas Sully was a prominent American portrait painter of the 19th century, known for his ability to capture the personality of his subjects. This particular work, created in the 1820s, reflects the Romantic style that emphasizes emotion and individualism.

An interesting fact about this painting is that it was commissioned by Sarah Cox's husband, John Redman Coxe, who was a notable figure in the medical community. Sully's portraits often celebrated the subjects' social status and personal stories, making them significant historical documents.