A 1925 advertisement for Camel cigarettes, published in an issue of the Technique.
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external free" href="https://smartech.gatech.edu/handle/1853/33693">https://smartech.gatech.edu/handle/1853/33693</a> Technique, Volume XV, No. 9, November 20, 1925.