The illustration for the successful crossing of the English Channel in a balloon by <a href="https://en.wikipedia.org/wiki/Percival_G._Spencer" class="extiw" title="en:Percival G. Spencer">Percival G. Spencer</a> (1864–1913) on December 20, 1898.
Unknown author<span style="display: none;">Unknown author</span>
<p>New York Journal and Advertiser, January 6, 1899, p. 14<br></p>
<a rel="nofollow" class="external free" href="https://www.loc.gov/resource/sn83030180/1899-01-06/ed-1/?sp=14">https://www.loc.gov/resource/sn83030180/1899-01-06/ed-1/?sp=14</a>