Pierpont Morgan's 1911 purchase of an album of Persian and Mughal paintings from Sir Charles Hercules Read, Keeper of British and Medieval Antiquities at the British Museum, London, proved to be an important turning point in the history of the Morgan Islamic collection. Belle da Costa Greene, Morgan's librarian, accompanied by art historian and collector Bernard Berenson, first saw the paintings at the great exhibition of Islamic art in Munich the previous year. She wrote to Read that they were among the finest works exhibited there and that this important school should be represented in Morgan's collection, asking him to give Morgan the right of first refusal. The album was likely begun by Husain Khān Shāmlū, governor of Herat (r. 1598–1618), and possibly continued by his son and successor, Hasān Shāmlū (d. 1646). Many of the earliest paintings were made in Herat itself.