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!!!License Information of Images on page
||Image Description||Credit||Artist||License Name||File
| Jakob Schipper (1842–1915)| http://scopeq.cc.univie.ac.at/Query/detail.aspx?ID=46970| Christian Griepenkerl| [{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:Jakob Schipper by Christian Griepenkerl 1919.jpg
| Jakob Schipper (1842–1915)| http://scopeq.cc.univie.ac.at/Query/detail.aspx?ID=39844| Ludwig Michalek (1859–1942)| [{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:Jakob Schipper by Ludwig Michalek.jpg
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