The works of John Ruskin: The elements of drawing. The elements of perspective. And the laws of Fésole
A Ruskin drawing manual from 1904, edited by Edward T. Cook and drawn from Ruskin's teaching on drawing and perspective, aimed at students learning to draw. The pictures are plain line diagrams of geometric figures: nested squares inside a circle, circles tangent to arcs, and a perspective construction with lettered points, all in black ink. A designer could take from them a clear method for building grids, proportional frames and tangent-circle layouts.
