Charles Hammett pictured in <i>The Syllabus 1911</i>, Northwestern University yearbook
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external text" href="http://babel.hathitrust.org/cgi/pt?id=mdp.39015063606035;seq=34"><i>The Syllabus</i> v.27 1911, p. 30</a>