Dictionnaire raisonné de l'architecture française du XIe au XVIe siècle
Eugène-Emmanuel Viollet-le-Duc's encyclopedic dictionary of French medieval architecture, published in Paris by A. Morel in 1875 for architects, restorers and antiquarians. Line engravings dissect buildings into capitals, mouldings, foliate friezes, vault profiles and measured sections, with lettered keys and hatched shading, offering ready-made ornament motifs, structural diagrams and drafting conventions.
