| by Mason, David The Secret Menace 1968, Pan-Ballantine, London ISBN 0356025470 A general overview of U-boats in WWII. Approximately one half the book consists of photographs. |
Translations of this title include:
| by Mason, David (U-boat, the secret menace) 1995, ISBN 9576771994 Paperback, 191 pages A general overview of U-boats in WWII. Approximately one half the book consists of photographs. | |
| by Mason, David (German U-boats) 1992, Moewig Verlag, Rastatt ISBN 3811872761 160 pages, 28 b&w photos A general overview of U-boats in WWII. Approximately one half the book consists of photographs. | |
| by Mason, David (Submarines, the secret menace) 1975, San Martin, Historia del siglo de la violencia A general overview of U-boats in WWII. Approximately one half the book consists of photographs. | |
| by Mason, David (U-boat war: Submarines against convoys) Onderzeeboten Tegen Konvooien Standaard Uitgeverij, Antwerp A general overview of U-boats in WWII. Approximately one half the book consists of photographs. | |
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