Many years ago I bought a book in the Royal Air Force Museum which is called
Laurels for Prinz Wittgenstein
Good book and for another 5£ it was possible to buy a special edition with some signatures (they were
collecting for aircrew charity).
The signatures are:
Werner Roell, Stuka, RK
Friedrich Ostheimer, Wittgensteins radio operator
Herbert Kümmritz, Wittgensteins second radio operator
Wolfang Falck, Nightfighter, RK
Günther Rall, Fighter, Swords
Hajo Herrmann, Fighter, Swords
Heinz Cramer, Bomber, RK
Of course post war but a nice little addition I was gladly paying a bit more for.