Cover of <a href="https://en.wikipedia.org/wiki/en:Scientific_American" class="extiw" title="w:en:Scientific American">w:en:Scientific American</a>, the September <a href="https://en.wikipedia.org/wiki/en:1848" class="extiw" title="w:en:1848">w:en:1848</a> issue.  The image is available from <a href="https://en.wikipedia.org/wiki/en:Cornell_University" class="extiw" title="w:en:Cornell University">w:en:Cornell University</a> Library: 
<a rel="nofollow" class="external free" href="http://cdl.library.cornell.edu/cgi-bin/moa/pageviewer?root=%2Fmoa%2Fscia%2Fscia0004%2F&amp;tif=00003.TIF&amp;cite=http%3A%2F%2Fcdl.library.cornell.edu%2Fcgi-bin%2Fmoa%2Fmoa-cgi%3Fnotisid%3DABF2204-0004-2&amp;coll=moa&amp;frames=1&amp;view=50">http://cdl.library.cornell.edu/cgi-bin/moa/pageviewer?root=%2Fmoa%2Fscia%2Fscia0004%2F&amp;tif=00003.TIF&amp;cite=http%3A%2F%2Fcdl.library.cornell.edu%2Fcgi-bin%2Fmoa%2Fmoa-cgi%3Fnotisid%3DABF2204-0004-2&amp;coll=moa&amp;frames=1&amp;view=50</a>
Original uploader was <a href="https://en.wikipedia.org/wiki/en:User:Mhym" class="extiw" title="w:en:User:Mhym">Mhym</a> at <a class="external text" href="https://en.wikipedia.org">en.wikipedia</a>
1848
Scientific American