<b><a href="https://en.wikipedia.org/wiki/Anton_Door" class="extiw" title="en:Anton Door">Anton Door</a></b> (1833–1919), Austrian pianist and music educator.
Unknown photographer
<a href="https://de.wikipedia.org/wiki/Das_interessante_Blatt" class="extiw" title="de:Das interessante Blatt">Das interessante Blatt</a> 3 July 1913, S. 26<br><small>(<a rel="nofollow" class="external free" href="http://anno.onb.ac.at/cgi-content/anno?aid=dib&amp;datum=19130703&amp;seite=26&amp;zoom=33">http://anno.onb.ac.at/cgi-content/anno?aid=dib&amp;datum=19130703&amp;seite=26&amp;zoom=33</a>)</small>