<a href="https://en.wikipedia.org/wiki/Rufus_Porter" class="extiw" title="en:Rufus Porter">Rufus Porter</a> 1849 advertisement.
<dl><dd>Immediate image source: <a rel="nofollow" class="external autonumber" href="http://www.flyingmachines.org/prtr.html">[1]</a>. <a href="https://en.wikipedia.org/wiki/User:Lupo" class="extiw" title="en:User:Lupo">Lupo</a> 07:42, 20 March 2006 (UTC)</dd></dl><p>Changed copyright tag from PD-US to PD-Old since this was an 1849 publication and the author (<a href="https://en.wikipedia.org/wiki/Rufus_Porter" class="extiw" title="en:Rufus Porter">Rufus Porter</a>) died in 1884.  The image was likely scanned from a 1935 reprint of the 1849 pamphlet. <a href="https://en.wikipedia.org/wiki/User:Clindberg" class="extiw" title="en:User:Clindberg">Carl Lindberg</a> 06:06, 19 March 2006 (UTC)
</p>
<dl><dd>See immediate img source. Originally published 1849 in Porter, R.: <i>Aerial Navigation:...</i>, H. Smith Publisher, New York 1849. <a href="https://en.wikipedia.org/wiki/User:Lupo" class="extiw" title="en:User:Lupo">Lupo</a> 07:42, 20 March 2006 (UTC)</dd></dl>
R. Porter (book)
1849
<a rel="nofollow" class="external free" href="http://www.flyingmachines.org/prtr.html">http://www.flyingmachines.org/prtr.html</a>  Originally published 1849 in Porter, R.: <i>Aerial Navigation:...</i>, H. Smith Publisher, New York 1849.