"Franz Botho Graef (12 October 1857, Berlin – 9 April 1917, Königstein im Taunus) was a German classical archaeologist and art historian. His father was painter Gustav Graef, and his sister, Sabine Lepsius, was also an artist of some note. Graef taught at the University of Jena from 1904 until 1917." - (en.wikipedia.org 04.11.2019)
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