The elements of drawing: in three letters to beginners
John Ruskin's 1857 manual The Elements of Drawing, written as three letters to beginners and held by Heidelberg University Library, teaches observational sketching through instruction rather than finished plates. Its pictures are loose pen and line studies of rough timber, a tree trunk with foliage, and a rocky bank, built from hatching and contour strokes that show how shadow and form can be described with simple marks for a designer studying line work.
