Signature of <a href="https://en.wikipedia.org/wiki/Paul_Langen" class="extiw" title="w:Paul Langen">Paul Langen</a> (1893–1945), opponent and victim of <a href="https://en.wikipedia.org/wiki/national_socialism" class="extiw" title="w:national socialism">national socialism</a> and headmaster of the catholic primary school in <a href="https://en.wikipedia.org/wiki/Holzlar" class="extiw" title="w:Holzlar">Holzlar</a> near <a href="https://en.wikipedia.org/wiki/Bonn" class="extiw" title="w:Bonn">Bonn</a> from 1931 to 1943.
<a href="https://en.wikipedia.org/wiki/Paul_Langen" class="extiw" title="w:Paul Langen">Paul Langen</a>
1936-11-03
Retrieved from a document signed by Langen as found in:<br>Ahlborn, Lukas (September 2009). <a rel="nofollow" class="external text" href="http://www.koerber-stiftung.de/bildung/geschichtswettbewerb/datenbank/beitrag/verehrter-verkannter-und-fast-vergessener-held-der-bonner-hauptschullehrer-paul-langen.html"><i>Verehrter, verkannter und fast vergessener Held? Der Bonner Hauptlehrer Paul Langen.</i></a> <span style="font-size: 0.95em; font-weight: bold; color:#555; position: relative;">(in German)</span> (Free hardcopy on request) page 15. Retrieved on October 2011.