In Joseph Pennell, No. 2, James Abbott McNeill Whistler captures the likeness of the American illustrator Joseph Pennell. The painting features a palette dominated by muted earth tones, with soft contrasts between light and shadow.

Pennell's expression is contemplative, suggesting a moment of introspection. The background is subtly rendered, allowing the viewer to focus on the figure's face and posture. The painting is an oil on canvas, showcasing Whistler's skill in blending colors and creating depth. The brushwork is delicate, with fine details that enhance the realism of the portrait.

The composition is balanced, drawing the viewer's eye to Pennell's face. This work exemplifies Whistler's approach to portraiture, emphasizing the subject's personality. James Abbott McNeill Whistler was known for his innovative techniques and his role in the Aesthetic Movement. This portrait of Joseph Pennell is significant as it reflects Whistler's friendship with the illustrator and his appreciation for his work.

Interestingly, Whistler often painted portraits of his contemporaries, capturing the essence of the artistic community in which he lived. This piece serves as a testament to their mutual respect and collaboration.