Threequarter view of ASL Viking biplane. 1912
Unknown author<span style="display: none;">Unknown author</span>
1912-01-10
Screenshot of flight magazine online archive,<a rel="nofollow" class="external free" href="http://www.flightglobal.com/pdfarchive/view/1912/1912%20-%200052.html">http://www.flightglobal.com/pdfarchive/view/1912/1912%20-%200052.html</a>