"20th".255.110 = = 2306E.30
Clark, William Bell. When the U-boats came to America. — Boston. Little, Brown, & Co. 1929. Plates. Tables. 22 cm.
Bibliography, pp. 313, 314. An account of the German submarine operations on the American coast in 1918.
xii, 359 pp. Portraits.
 
Thts card was printcd at the Boston Public Library, October 15, 1929. Submarine warfare. — European War,
N6477 — T.r. — European War, 1 1914-1919. Germany. Navy. — European War, 1914-1919. United States. Navy.