Bird's eye view of the City of New York, Brooklyn, Williamsburg, 1859. Courtesy of the New York Public Library.
Unknown author<span style="display: none;">Unknown author</span>; cropped by <a href="//commons.wikimedia.org/wiki/User:Beyond_My_Ken" title="User:Beyond My Ken">Beyond My Ken</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Beyond_My_Ken" title="User talk:Beyond My Ken"><span class="signature-talk">talk</span></a>) 17:51, 2 April 2016 (UTC)
<a rel="nofollow" class="external free" href="http://digitalgallery.nypl.org/nypldigital/id?55131">http://digitalgallery.nypl.org/nypldigital/id?55131</a>