The Ancient Theatre of Epidaurus.
GELL, William. The Itinerary of Greece with a Commerntary on Pausanias and Strabo and an Account of the Monuments of Antiquity at Present existing in that Country compiled in the Years M DCCC I : II: V: VI, London, T. Payne, 1810.
Art and antiquities
The Gennadius Library - The American School of Classical Studies at Athens