Breue compendio di fortificatione moderna
A 1639 Italian treatise on modern fortification, published in Milan by Filippo Ghisolfi and attributed to Giuseppe Barca, aimed at military engineers and students of siege defence. The pictures are plain geometric diagrams in black line on the page, with lettered points, arcs, circles and triangles, which a designer could borrow as clean schematic linework for technical or instructional graphics.
