Einstein_1921_by_F_Schmutzer_-_restoration

By Ferdinand Schmutzer - http://www.bhm.ch/de/news_04a.cfm?bid=4&jahr=2006 [dead link], archived copy (image), Public Domain, https://commons.wikimedia.org/w/index.php?curid=34239518

By Ferdinand Schmutzer – http://www.bhm.ch/de/news_04a.cfm?bid=4&jahr=2006 [dead link], archived copy (image), Public Domain, https://commons.wikimedia.org/w/index.php?curid=34239518

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