Plan of the first floor (<i><a href="https://en.wikipedia.org/wiki/piano_nobile" class="extiw" title="en:piano nobile">piano nobile</a></i>) of the <a href="https://en.wikipedia.org/wiki/Palais-Royal" class="extiw" title="en:Palais-Royal">Palais-Royal</a> in 1745, before the reconstruction work carried out by the architects Cartaud and Contant d'Ivry; based on a plan in a manuscript at the <a href="//commons.wikimedia.org/wiki/Biblioth%C3%A8que_nationale_de_France" class="mw-redirect" title="Bibliothèque nationale de France">Bibliothèque nationale de France</a> which is entitled "Dressé pour le logement des officiers"
Unknown author<span style="display: none;">Unknown author</span>
1745
Champier, Victor (1900). <i>Le Palais-Royal</i>, vol. 1, p. 364. Paris.