Dictionnaire raisonné de l'architecture française du XIe au XVIe siècle
A French architectural dictionary by Eugène-Emmanuel Viollet-le-Duc, published in Paris by B. Bance in 1854, covering French architecture from the 11th to 16th centuries for students and architects. Its pictures are measured elevations, sections and plan details of medieval walls, arches, bays and capitals, drawn in fine line with lettered keys, useful for studying Romanesque and Gothic structure and proportion.
