Pilot Ormer Locklear showing actress Viola Dana how he crawled back along the tail of his aircraft to perform midair feats, on page 51 of the August 21, 1920 <i>Exhibitors Herald</i>.
Unknown photographer
<a rel="nofollow" class="external text" href="https://archive.org/details/exhibitorsherald11exhi"><i>Exhibitors Herald</i> (Aug. 1920)</a> on the Internet Archive