Dictionnaire raisonné de l'architecture française du XIe au XVIe siècle
Eugène Viollet-le-Duc's illustrated dictionary of French medieval architecture, published in Paris by Morel from 1858 for architects, restorers and antiquarians. Line engravings after his own drawings show arches, vault webs, piers and cornices in section, elevation and cutaway perspective, with coursed masonry, hatching and dimension notes usable as diagram vocabulary, ornament motifs or structural line art.
