Design Information. Memorandums Nos. 206, 520, 617 (Technical Notes, National Advisory Committee for Aeronautics)

Hardcover. Blue cloth over boards. "Design Information" written on the spine in white paint, with a square of white paint further down the spine. Measures 10.5 x 8 inches. Multiple sections bound together in library binding; each section individually paginated. Sections are numbered as follows: 206, 520, and 617 -- published, respectively, in 1924, 1929 and 1931. The first section is titled "Structural Weight of Aircraft as Affected by the System of Design (No. 206)". 21 pages. The next is titled "Torsional Rigidity of Cantilever Wings With Constant Spar and Rib Sections (No.520)". 39 pages. Section 3 is titled "Investigation of Certain Wing Shapes With Sections Varying Progressively Along the Span (No. 617)". 44 pages. Each section is followed by multiple figures and tables. The entire volume, with original covers, has a later library binding. Gutters at front and back reinforced with white cloth. A library stamp and some writing in pen on the front free endpaper, and writing in pencil on the first title page. Pages within are clean and free of foreign markings. Light rubbing to covers. Comes from a large collection of technical memorandums from the National Advisory Committee for Aeronautics before the committee was abolished upon creation of NASA in 1958. Be sure to check our other listings for the rest of the collection.…