Nieuport-Delage NiD 540 3-view drawing from L'Aérophile October,1928
L'Aérophile magazine
<a rel="nofollow" class="external free" href="https://gallica.bnf.fr/ark:/12148/bpt6k6553851s/f26.item">https://gallica.bnf.fr/ark:/12148/bpt6k6553851s/f26.item</a>