I have a document created by a sailor in the [[Kriegsmarine]] during [[World War II]]. Thus, the document is approximately 60 years old, but its author didn't die until 1982. The document has no copyright notice associated with it and was never published until it was captured by the Allies after the war. I can justify a claim to fair use for Wikipedia's purposes, but I'd like to determine what its copyright status really is. Can anyone help me?