Manuscript map with overlays open. Cartographer unknown. North is oriented to the left. Visual scale [124 mm=300 toises]. Overlays show lines of artillery fire, "renvoy pour les nuits" (with legend) and an outlying depot in the east. A date of approximately 1748 has been assigned based on the time of French assault. Although no ownership label is present, this map is believed to have belonged to the Honourable Robert Clifford. Acquired as part of the Lord Cholmondeley Collection.