*US War Department, "Airship Aerodynamics: Technical Manual", (1941) 2003, ISBN 1-4102-0614-9==External links==
* Toland, John, "Ships in the Sky", New York, Henry Hold; London, Muller, 1957,* Vaeth, J. Gordon, "Blimps & U-Boats", Anapolis, Maryland, US Naval Institute Press, 1992, ISBN 1-55750-876-3* Ventry, Lord; Kolesnik, Eugene, "Jane's Pocket Book 7: Airship Development", 1976 ISBN 0-356-04656-7* Ventry, Lord; Koesnik, Eugene M., "Airship Saga", Poole, Dorset, Blandford Press, 1982, p. 97 ISBN 0-7137-1001-2* Winter, Lumen; Degner, Glenn, "Minute Epics of Flight", New York, Grosset & Dunlap, 1933.