Collection of letters to and from <a href="https://en.wikipedia.org/wiki/Vidkun_Quisling" class="extiw" title="w:Vidkun Quisling">Vidkun Quisling</a> in the years 1914–1918.
<bdi><a href="https://en.wikipedia.org/wiki/en:Vidkun_Quisling" class="extiw" title="w:en:Vidkun Quisling"><span title="Norwegian politician and Nazi collaborator (1887-1945)">Vidkun Quisling</span></a>
</bdi>
The National Archive of Norway, via <a rel="nofollow" class="external text" href="http://www.europeana1914-1918.eu/en/contributions/21368">Europeana 1914–1918</a>