American mathematician Marie-Louise Michelsohn (alternatively named "Mary-Louise Michelson" on the back of the photo) at Berkeley, Californina in 1975; scanned at 800 dpi
<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=2866">https://opc.mfo.de/detail?photo_id=2866</a>