Book by <a href="//commons.wikimedia.org/wiki/Alberto_Santos-Dumont" title="Alberto Santos-Dumont">Alberto Santos-Dumont</a>.
<a href="//commons.wikimedia.org/wiki/Alberto_Santos-Dumont" title="Alberto Santos-Dumont">Alberto Santos-Dumont</a>
<a rel="nofollow" class="external text" href="https://archive.org/details/myairships00santrich">Internet Archive</a>