Monographie de Notre-Dame de Paris et de la Nouvelle Sacristie de MM. Lassus et Viollet-le-Duc
A monograph on Notre-Dame de Paris and the new sacristy by architects Lassus and Viollet-le-Duc, published in Paris by A. Morel in 1860 and written by an author named Celtibère, M. The photographs and plans show Gothic tracery windows, carved and studded portal doors, and the stone relief bands of the cathedral's architecture, with a measured line drawing of a traceried bay that a designer could use for Gothic ornament and window geometry.
