Signature of <a href="https://en.wikipedia.org/wiki/Pat_Nixon" class="extiw" title="w:Pat Nixon">Pat Nixon</a>.
Pat Nixon, <a href="//commons.wikimedia.org/wiki/User:Connormah" title="User:Connormah">Connormah</a>, <a href="//commons.wikimedia.org/wiki/User:Certes" title="User:Certes">Certes</a>
Own work by uploader traced by hand and by <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a>