Fortress plans of Fort Crèvecoeur, Ravenstein and Helmond

On the left page, a fortress plan of Fort Crèvecoeur. A scale bar in the lower left: 30 Virgae Roeden. On the upper part of the right page, a fortress plan of Ravenstein. The coat of arms of Brabant in the upper left and the coat of arms of Cleves in the upper right. A scroll with the title in the center at the top. A plan of Helmond in bird's-eye perspective in the lower part of the right page. The title cartouche in the lower left and the coat of arms of Helmond in the upper left. With Latin text on the verso.