Map of the Bourtange fortress Fortres de Bourtange (title on object), Two prints on one sheet: At the top a print with a representation of the Bourtange fortress and below a print with the title in a cartouche. In the top print a part of the title on top of a ribbon, a legend at the bottom left and a scale at the bottom right. Above right: bl. 246, maps, atlases, Bourtange, Hendrik Hofsnider (mentioned on object), Groningen, 1743, paper, etching, h 104 mm × w 100 mm × h 36 mm × w 101 mm