Picasso, Friends and FamilyWolfgang Frei, Jean-Louis Andral, Edward Quinn · First published 2023Open the Tome
"Mit List und -- Kühnheit -- Widerstand leisten"Wolfgang Bunzel, Kerstin Frei, Mechtild M. Jansen · First published 2010Open the Tome
Historischer Atlas von Bayerisch-SchwabenWolfgang Zorn, Hans Frei, Pankraz Fried, Franz Schaffer · First published 1982Open the Tome
