Elémens de perspective pratique, à l'usage des artistes : suivis de réflexions et conseils à un élève sur la peinture, et particulièrement sur le genre du paysage
Pierre Henri de Valenciennes published this 1800 Paris treatise on practical perspective for artists, with advice on painting landscape. Its plates are geometric line diagrams of squares, triangles, pentagons, blocks and cornice mouldings built from vanishing-point construction lines, with shaded solids. A designer could borrow their clean technical grid logic for layout, construction lines, and architectural form studies.
