Gustave Choquet at Berkeley, California (presumably UC Berkeley); selected portion of <a href="//commons.wikimedia.org/w/index.php?title=File:Yvonne_and_Gustave_Choquet_1974_(re-scanned_A,_bordered)&amp;action=edit&amp;redlink=1" class="new" title="File:Yvonne and Gustave Choquet 1974 (re-scanned A, bordered) (page does not exist)">File:Yvonne and Gustave Choquet 1974 (re-scanned A, bordered)</a>, increased photo resolution, and re-scanned it
<bdi><a href="https://en.wikipedia.org/wiki/en:George_Bergman" class="extiw" title="w:en:George Bergman"><span title="American mathematician">George Bergman</span></a>
</bdi>
CC BY-SA 4.0
Scanned via Epson Perfection V370; see also <a rel="nofollow" class="external free" href="https://opc.mfo.de/detail?photo_id=4937">https://opc.mfo.de/detail?photo_id=4937</a>