1885 Admiralty Chart - Isthmus of Panama Showing The Proposed Panama Canal and the Railway . . . 1885
<bdi><a href="https://en.wikipedia.org/wiki/en:United_Kingdom_Hydrographic_Office" class="extiw" title="w:en:United Kingdom Hydrographic Office"><span title="UK government agency concerned with providing hydrographic and marine geospatial data">United Kingdom Hydrographic Office</span></a>
</bdi>
<a rel="nofollow" class="external free" href="https://www.raremaps.com/gallery/detail/51515/isthmus-of-panama-showing-the-proposed-panama-canal-and-the-british-admiralty">https://www.raremaps.com/gallery/detail/51515/isthmus-of-panama-showing-the-proposed-panama-canal-and-the-british-admiralty</a>