Morgan's study, now the West Library, was described by historian Wayne Andrews as "one of the greatest achievements of American interior decoration". The design of the study reflected Morgan's tastes; as his son-in-law Herbert Satterlee said, "No one could really know Mr. Morgan at all unless he had seen him in the West Room." The West Library contains low wooden bookshelves as well as a fireplace with a marble mantelpiece. The decorative elements include stained glass panels in the study's windows, as well as a wall covering of red damask. The current damask covering, a replica by Scalamandré, is a copy of a pattern that was displayed at Rome's Chigi Palace. The study's wooden ceiling was commissioned by James Wall Finn, who painted coats-of-arms onto the ceiling based on Italian bookplates from Morgan's collection.