Comparison of the illustration of the telephone in Alexander Graham Bell's diaries and Elisha Gray's patent application.
Elisha Gray and Alexander Graham Bell
1876-03
Photo illustration based on <a href="//commons.wikimedia.org/wiki/File:Alexander-graham-bell-telephone-notebook.jpg" title="File:Alexander-graham-bell-telephone-notebook.jpg">Alexander Graham Bell's notebooks</a> and <a href="//commons.wikimedia.org/wiki/File:Gray-telephone-caveat.gif" title="File:Gray-telephone-caveat.gif">a patent caveat filed by Elisha Gray</a>. Featured in Seth Schulman's book <i><a href="https://en.wikipedia.org/wiki/The_Telephone_Gambit" class="extiw" title="en:The Telephone Gambit">en:The Telephone Gambit</a></i> and his notes at <a rel="nofollow" class="external autonumber" href="http://www.patentlyo.com/patent/2008/01/the-telephone-g.html">[1]</a>