The <a href="https://en.wikipedia.org/wiki/Caproni_Ca.73" class="extiw" title="en:Caproni Ca.73">Caproni Ca.73</a> <a href="https://en.wikipedia.org/wiki/airliner" class="extiw" title="en:airliner">airliner</a>
unattributed
ca. late 1920s
Scanned from Page 116 of Mondey, David, ed., <i>The Complete Illustrated Encyclopedia of the Worlds Aircraft: Military and Civil Aviation From the Beginnings to the Present Day</i>, Secaucus, New Jersey: Chartwell Books Inc., 1978, <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-89009-771-2" title="Special:BookSources/0-89009-771-2">ISBN 0-89009-771-2</a>.