The recent publication of two surveys of Sienese painting is another indication of a noticeable boom in this field. Such historians as William Bowsky, Samuel Cohn, and Daniel Waley have fueled this resurgence, and their investigations of the political, religious, and social institutions of the Commune of Siena identified a unique and influential culture with well-preserved archival records. Building upon their work, art historians have added the study of historical and documentary context to the...