Illustrated throughout, this book is the story of the month in the spring of 1943 - "Black May" as the U-boat crews called it - when it became clear that the Allies could and would defeat the submarine threat. Gannon draws on personal recollections.

Black May 2002, Aurum Press, London

ISBN-13: 9781854108326

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Black May 1999, Dell Publishing Company

ISBN-13: 9780440614012

Trade paperback

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Black May 1999, Dell Publishing Company

ISBN-13: 9780440235644

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