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![[Technical drawings of sound suppressor]](https://digitalcollections.museumofflight.org/files/square_thumbnails/680e1a4a53516fa3dda4c5a37ae6aa83.jpg "[Technical drawings of sound suppressor]")
Technical drawings of a sound suppressor for a supersonic transport aircraft, drawn by William H. Cook, December 13, 1966.
![Universal Transport Model 953-326 [Technical drawing]](https://digitalcollections.museumofflight.org/files/square_thumbnails/c0daba4aa71fa3cd23bc037a6d3cff5e.jpg "Universal Transport Model 953-326 [Technical drawing]")
Technical drawing of the Universal Transport Model 953-326, circa 1940-1942.