A. E. van Vogt's signature.
<ul><li>A. E. van Vogt</li>
<li>derivative work <a href="//commons.wikimedia.org/wiki/User:Eru" class="mw-redirect" title="User:Eru">Eru</a></li></ul>
Own work based on: <a href="//commons.wikimedia.org/wiki/File:A.E._van_Vogt_(signature).jpg" title="File:A.E. van Vogt (signature).jpg">A.E. van Vogt (signature).jpg</a>