Andreæ Alberti duo libri : prior, De perspectiva, cum & præter arithmeticam inventa : posterior, De umbra ad eam pertinente
Andreas Albrecht's 1671 Nuremberg treatise on perspective and shadows, printed by the Fürst heirs, is a scholarly manual of geometric projection for students of mathematics and draughtsmen. The pages are engraved plates of numbered diagrams: vanishing-point constructions, plan and elevation views of solids, and cast shadows of cubes, pyramids and cylinders drawn in fine parallel hatching. A designer could take from them a clear method for building perspective grids and placing shadows under a light source.
