"Oil Appears on the Troubled Waters
<p>By Lieutenant Henri Farré 
</p><p>Observateur-Bombardier au Premier Groupe d'Escadrille de Bombardment 
</p><p>A French F.B.A. hydro-aeroplane, flying over the North Sea in 1916 at an altitude of 1,600 metres, swooped on the silhouette of a German submarine, dropped a bomb from ninety metres and hit the U-boat two yards back of her periscope. That is the end of the story of the U-boat.
</p>
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<bdi><a href="https://www.wikidata.org/wiki/Q3131067" class="extiw" title="d:Q3131067"><span title="French aviator and painter (1871-1934)">Henri Farré</span></a>
</bdi>
<a rel="nofollow" class="external text" href="https://www.loc.gov/resource/sn83030214/1919-04-06/ed-1/?sp=2&amp;r=-1.104,-0.05,3.208,1.517,0">Apr 6 1919 New-York Tribune</a>