Nieuport-Delage NiD 640 3-view drawing from NACA Aircraft Circular No.92
NACA Aircraft Circular
<a rel="nofollow" class="external free" href="https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090684.pdf">https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090684.pdf</a>