References
Little is available in the way of bibliography on lighter-than-aircraft, their history and characteristics. Among the best works dealing with this subject are Captain C. E. Rosendahl’s, “What About the Airship?” (Scribner’s), and “Up Ship” (Dodd Mead); Captain Ernst Lehmann’s “Zeppelin” (Longman’s) and Captain J. A. Sinclair’s “Airships in Peace and War” (Rich & Cowan, London).
Copies of “The Story of the Airship (Non-Rigid),” may be procured through The Goodyear Tire & Rubber Co. at Akron, Ohio; or at Los Angeles, or branch offices.
Footnotes
1See U.S. Navy Publication, “German Submarine Activities on the Atlantic Coast of the United States and Canada,” 1920, also the book, “German Subs in Yankee Waters”—Henry J. James, 1940.