Fabrik Borsig in Moabit, Blick vom Schornstein
Unknown author<span style="display: none;">Unknown author</span>
<i>Berlin in frühen Photographien 1857-1913</i>. <a href="//commons.wikimedia.org/wiki/Special:BookSources/3-88814-123-0" title="Special:BookSources/3-88814-123-0">ISBN 3-88814-123-0</a>