About Luckner's _Seeadler_: I don't remember whether this book is a translation of a biography, but Lowell Thomas, a (U.S.) radio newsman and journalist and author of the 1920s to 1940s, published _Count Luckner, the Sea Devil_ (Garden City [NJ, USA]: Garden City Publishing, 1932).

Might be findable on Amazon, certainly in US via Interlibrary Loan through any public library.

New subject: this is a gorgeous site. Wish I had found it before I published _U.S. Merchant Marine at War, 1775-1945_ (Annapolis, MD: U.S. Naval Institute Press, 1998.

Bruce L. Felknor