American aviator Bert Hall, from the front piece of his book <i>En l'air</i> (1918) about his experience during World War I.
Unknown photographer
2016-01-22 07:46:13
Hall, Bert (1918), <i><a rel="nofollow" class="external text" href="https://archive.org/details/enlairinairthree00halliala">En l'air!</a></i>, New York: The New Library, Inc., on the Internet Archive