Susan
Perhaps these.
Das Leben des Feldmarschalls Grafen Yorck von Wartenburg
Volume 1
https://books.google.ca/books?id=YD4JAAAAQAAJ&printsec=frontcover&dq=
Volume 2
https://books.google.ca/books?id=gz4JAAAAQAAJ&printsec=frontcover&dq=
Ron