Yan Birch

<strong>Quelle:</strong> <bdi><a href="https://en.wikipedia.org/wiki/en:Frederick_Schwatka" class="extiw" title="w:en:Frederick Schwatka"><span title="American writer">Frederick Schwatka</span></a> </bdi> - <cite class="book" style="font-style:normal" id="Reference-Schwatka-1885">Schwatka, Frederick (1885) <i> Report of a Military Reconnaissance in Alaska, Made in 1883</i>, <a href="//commons.wikimedia.org/wiki/Category:Washington,_DC" title="Category:Washington, DC">Washington, DC</a>: Government Printing Office <small></small></cite>