The combined Dumbarton Oaks and Fogg collection of Byzantine seals is one of the largest in the world, containing 17,000 specimens. Volume 5 in the catalogue includes seals with place names from the East, Constantinople and its environs, and seals with uncertain readings. Each section begins with a short essay on the region’s history. Each seal is illustrated and is accompanied—where appropriate—by full commentary regarding the specimen’s date, biographical information on its owner, peculiarities of orthography, and special features of iconography. These seals contribute significantly to historical geography, the evolution of the Byzantine imperial administration, development in the Greek language, and decorative vogues.

The vast collection of 17,000 Byzantine lead seals in the Harvard collections has long been recognized as an important source for the study of the Byzantine provinces. This volume is the fourth in the series of catalogues of geographical seals, and presents photographs, descriptions, and commentaries on the seals from the East.

The military achievements of the emperors Nikephoros Phokas, John Tzimiskes, and Basil II brought the Byzantine Empire to the height of its power by the early eleventh century. This volume presents new editions and translations of two military treatises—the Praecepta militaria of Nikephoros Phokas and the revised version included in the Taktika of Nikephoros Ouranos—outlining the tactical system used by Byzantine armies in campaigns against Muslim forces in Cilicia and Syria. Products of experienced soldiers, the texts offer a realistic view of Byzantine warfare and reveal the sophistication of Byzantine military science.

Eric McGeer places the treatises in military historical context; explores the factors that led the Byzantine army to fight as it did; and investigates morale, discipline, and leadership—all of which determined the difference between failure and success.