Dictionnaire raisonné de l'architecture française du XIe au XVIe siècle
Viollet-le-Duc's Dictionnaire raisonné de l'architecture française, published in Paris by B. Bance in 1854, is a multi-volume reference dictionary of French architecture from the eleventh to sixteenth centuries, written for architects and students. Its plates are precise measured line drawings of doorways, arches, ground plans and fortifications, drawn in black ink with hatched shadows and lettered keys. A designer could take from them the clean geometry of Gothic and Romanesque profiles, arch mouldings and plan layouts.
