The elements of perspective
A 1813 Albany treatise on perspective by Simeon De Witt, printed by H.C. Southwick for students of drawing and surveying. The three pictures are faint, washed-out plates of pale line diagrams, mostly ruled construction lines, a sloping plane with a stepped object, and a few stray marks with heavy foxing and stains. A designer could take from them the look of early instructional geometry, with thin guide lines and sparse, uncoloured drawing on aged paper.
