Mein Weg nach Scapa Flow / Guenther Prien

by Prien, Guenther
Published: Berlin : Deutscher Verl, (1940)

Library: Topography of Terror (Berlin)

Lone wolf : the life and death of U-boat ace Werner Henke / Timothy P. Mulligan

by Mulligan, Timothy Patrick 1950-
Published: Westport, Conn. u.a. : Praeger, 1993

Library: Institute for Contemporary History (Munich)