The product is a lot of 2 signed first edition books by Michael Gannon titled "Black May: The Epic Story of the Allies' Defeat of the German U-Boats in May 1943." The books fall under the subject area of military history, with a focus on World War II. Published by HarperCollins in 1998, the hardcover books measure 9.2 inches in length, 6.1 inches in width, and 1.5 inches in height. With a total of 512 pages, these books provide a detailed account of the historical events surrounding the military actions during this period.