<a href="https://en.wikipedia.org/wiki/Arthur_Davidson_(motorcycling)" class="extiw" title="w:Arthur Davidson (motorcycling)">Arthur Davidson</a>
Luke Grant, Editor
1920-12
<cite>North Shore Bulletin</cite>, volume 4, issue 2, Chicago: <a href="https://en.wikipedia.org/wiki/Chicago_North_Shore_and_Milwaukee_Railroad" class="extiw" title="w:Chicago North Shore and Milwaukee Railroad">Chicago North Shore &amp; Milwaukee Railroad</a>, December 1920; <a rel="nofollow" class="external text" href="http://www.books.google.com/books?id=aBswAAAAYAAJ&amp;pg=PP37">Google Books</a>