Lioré et Olivier LeO H-15 3-view drawing from Les Ailes July 8, 1926
Les Ailes newspaper
<a rel="nofollow" class="external free" href="https://gallica.bnf.fr/ark:/12148/bpt6k96072642/f3.double">https://gallica.bnf.fr/ark:/12148/bpt6k96072642/f3.double</a>