Cunningham-Hall X-90
neznámý (unknown)
1930-10-15
Le Document aéronautique, Vol. 1930, No. 55 (October 1930), p. 619, <a rel="nofollow" class="external free" href="https://gallica.bnf.fr/ark:/12148/bpt6k9767818s/f363.item">https://gallica.bnf.fr/ark:/12148/bpt6k9767818s/f363.item</a>