Floor plan of the fort at Coylan, Jakob van der Schley, 1755

Floor plan of the fort at coylan. Plan de la forteresse de coylan. Grondtékening der fortresse coylan. The floor plan is marked with numbers relating to a key. But there are no explanatory notes to the key. Date: 1755. Dimensions: height: 21.5 cm (8.4 in); width: 15.5 cm (6.1 in). Medium: engraving on paper. Collection: Koninklijke Bibliotheek. AMH-8022-KB Floor plan of the fort at Coylan