(U.S. Naval Air Station, Moffett Field, California). The Airship Envelope, A Manual for Fabric Workers, Manual No. 3. A & R Dept of Information, Moffett Field, 1943. 42pp, illus with drawings on each page (as shown), 5x7.25", card covers. A very rare airship manual from the height of WWII. About good+, light cover toning, contents excellent.