I suppose you are talking about the wing cross-sections. I think you'll find the fuselage cross-sections are there, in their own folder, in ai format. I should have thought the the wing cross-sections would be easy enough to draw without a reference other than the illustration on p100. You can import only ai format files into the Spline Modeler. This is so that you can import cross-sections 'ready-made' (rather than using them as a background image).