A fact from Franz-Joseph Müller von Reichenstein appeared on Wikipedia's Main Page in the Did you know column on 20 January 2011 (check views). The text of the entry was as follows:
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This article has a photo of Franz-Joseph Müller von Reichenstein. It shows an man maybe 60 years old, and if his born in 1740 the photo would then have been take around 1800. This is 26 years before the invention of photography and some 50 years before portrait photography became widespread.