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| Thank you note from Ernst Berl (1877-1946) to Georg Bredig (1868-1944) and his wife Rosa Bredig (1877-1933). Note thanks them for their hospitality and invites the Bredigs to stay at his home in Darmstadt, Germany in the future. Ernst Berl, was an Austrian chemist and professor of technical and macromolecular chemistry. During World War One, he produced explosives and chemical weapons. In 1919, he accepted a position at the Technical University of Darmstadt as a professor.| This file was contributed to Wikimedia Commons by Chemical Heritage Foundation as part of a cooperation project. The donation was facilitated by the Digital Public Library of America , via its partner PA Digital . Record in source catalog DPLA identifier: fde260a0b156460cfde876728d08a165 Chemical Heritage Foundation identifier: padig:SHI-qlo7zs3| | [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Thank you note from Ernst Berl to Georg and Rosa Bredig - DPLA - fde260a0b156460cfde876728d08a165.jpg
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