Portrait of <a href="https://en.wikipedia.org/wiki/Pierre_Contant_d%27Ivry" class="extiw" title="en:Pierre Contant d'Ivry">Pierre Contant d'Ivry</a> (1698–1777), French architect, frontispiece of his <i>Ouevres d'architecture</i> (1769). The architectural plan hanging over the front ledge is his revised project for the <a href="//commons.wikimedia.org/wiki/%C3%89glise_de_la_Madeleine" class="mw-redirect" title="Église de la Madeleine">Église de la Madeleine</a> in Paris.
Unknown author<span style="display: none;">Unknown author</span>
1769
User scan of Braham, Allan (1980). <i>The Architecture of the French Enlightenment</i>, p. 50. Berkeley: University of California Press. <a href="//commons.wikimedia.org/wiki/Special:BookSources/9780520067394" title="Special:BookSources/9780520067394">ISBN 9780520067394</a>.