 He is best known for his light-filled realist paintings of urban interiors, often featuring classical allusions, and set in his own Manhattan apartment.As visible in "The Sculptor" (1964, oil on canvas, 80" x 59 7/8", Brooklyn Museum), much of Koch's work is made up of portraits and social scenes, including cocktail parties and scenes with the artist at work with his models.He was a mentor of the painter Charles Pfahl (b.