<div class="description">
Drawing of an Advertisement for Heliopolis in a newspaper.</div>
<div class="fn value">
Unknown author<span style="display: none;">Unknown author</span></div>
before 12 February 1931 <div style="display: none;">date QS:P571,+1931-02-12T00:00:00Z/7,P1326,+1931-02-12T00:00:00Z/11</div>
<cite style="font-style:normal"> (<span class="mw-formatted-date" title="1931-02-12">1931-02-12</span>). "L’île du Levant : la Physiopolis de la Méditerranée". <i>Naturisme : le grand hebdomadaire de la culture humaine</i> (138): 12. Retrieved on <span class="mw-formatted-date" title="2017-10-09">2017-10-09</span>.</cite>