Sectional elevation of North Sea airship
Unknown author<span style="display: none;">Unknown author</span>
<a class="external free" href="https://commons.wikimedia.org/wiki/File:British_airships,_past,_present_%26_future_(IA_britishairshipsp00whal).pdf">https://commons.wikimedia.org/wiki/File:British_airships,_past,_present_%26_future_(IA_britishairshipsp00whal).pdf</a>