Perspective : the old and the new method
A. S. Percival's 1921 treatise on perspective construction, published in London and New York by Longmans, Green for draughtsmen, architects and art students. The plates are line diagrams: pyramids, prisms and octahedra drawn with vanishing lines, dotted construction guides and lettered vertices, some faces shaded flat grey — usable as geometric line motifs, axonometric frameworks and annotated diagram textures.
