Portrait photograph of Hungarian artist <a href="https://en.wikipedia.org/wiki/B%C3%A9la_Cz%C3%B3bel" class="extiw" title="w:Béla Czóbel">Béla Czóbel</a>, ca. 1908-09
Anonymous photographer
<a rel="nofollow" class="external text" href="http://www.artartworks.com/exhibitions/jean-metzinger-9744/">Illustrated in Gelett Burgess, <i>The Wild Men of Paris</i>, The Architectural Record, Document 3, May 1910, New York</a>