Brief Review of War in the Atlantic. Up to Reading of U-boat Traffic in December 1942
<ul><li><a href="//commons.wikimedia.org/wiki/File:Uboot_krieg.jpg" title="File:Uboot krieg.jpg">Uboot_krieg.jpg</a>: NSA</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:M0tty" title="User:M0tty">M0tty</a> (<a href="//commons.wikimedia.org/wiki/User_talk:M0tty" title="User talk:M0tty"><span class="signature-talk">talk</span></a>)</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Uboot_krieg.jpg" title="File:Uboot krieg.jpg">Uboot_krieg.jpg</a></li></ul>