The german edition of Aufklaerer is still available at 19.95 GBP from
www.midlandcountiessuperstore.com
I don't know whether the italian edition of "Courage Alone" is still available at the italian book selling Tuttostoria (info@tuttostoria.it)
Please note that this last book, well printed, with nice drawings and pictures,
contains not only many informations about Regia Aeronautica but also many mistakes.
Gianandrea