<bdi><a href="https://en.wikipedia.org/wiki/en:Josiah_Wood_Whymper" class="extiw" title="w:en:Josiah Wood Whymper"><span title="British wood-engraver, book illustrator and watercolorist (1813-1903)">Josiah Wood Whymper</span></a>
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Digital Collections, The New York Public Library. <a rel="nofollow" class="external text" href="https://digitalcollections.nypl.org/items/510d47da-727d-a3d9-e040-e00a18064a99">(still image) , (1851)</a>. The New York Public Library, Astor, Lennox, and Tilden Foundation. Retrieved on <span class="mw-formatted-date" title="2015-04-01">April 1, 2015</span>.