Berkmans "Speed Scout", U.S. Army Air Service fighter promoting war bonds.
Unknown author<span style="display: none;">Unknown author</span>
1918
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/sdasmarchives/4590265436/">https://www.flickr.com/photos/sdasmarchives/4590265436/</a>