(U.S. Naval Air Station, Moffett Field, California). Airship Propulsion, For Mechanic Learners, Manual No. 2. A & R Dept of Information, Moffett Field, 1942. 16pp, illus with drawings on each page (as shown), 5x7.25", card covers. A very rare airship manual from the height of WWII. About fair-good, cover toning, contents excellent.