Traité de géométrie descriptive. 3. ed., rev. et augm. de la théorie de l'intersection de deux polyèdres
A French textbook of descriptive geometry by Jules de La Gournerie, issued in its third edition by Gauthier-Villars in Paris in 1891 for engineering and mathematics students. The plates are numbered line diagrams in fine black and dashed ink on cream paper: projection planes, cones, circles, tangents and lettered construction points, useful as technical linework, grid overlays and abstract geometric motifs.
