Signature of colonial U.S. and English artist John Singleton Copley
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Singleton_Copley" class="extiw" title="w:en:John Singleton Copley"><span title="American painter (1738-1815)">John Singleton Copley</span></a>
</bdi>
published 1900
<i>Appletons' Cyclopædia of American Biography</i>, 1900, v. 1, p. 735