Envelope of a letter of Sven Hedin to his sister Alma Hedin with the stamps of the Sino-Swedish Expedition in China 1927-1933 (China: Michel-No. 246 - 249)
Sven Hedin
CC BY 2.5
Sven Hedin foundation <a rel="nofollow" class="external autonumber" href="http://www.etnografiska.se/smvk/road/www/article/10/jsp/Render.jsp?t=99&amp;a=6731&amp;l=en_US">[1]</a>, Stockholm: Letter of Sven Hedin to his sister Alma Hedin with the stamps for the Sino-Swedish Expedition in China 1927-1933 (China: Michel-No. 246 - 249) <a rel="nofollow" class="external autonumber" href="http://philatelie.deutschepost.de/philatelie/art/informationen/berichte/story/story0509_02e.jpg">[2]</a>.