Niels Bohr, physicist. Date circa 1922. By The American Institute of Physics credits the photo [1] to AB Lagrelius & Westphal, which is the Swedish company used by the Nobel Foundation for most photos of its book series Les Prix Nobel. (Niels Bohr's Nobel Prize biography, from 1922) [Public domain], via Wikimedia Commons

https://fi.wikipedia.org/wiki/Niels_Bohr#/media/File:Niels_Bohr.jpg