. "Postcard from B. – Gaertner to Prosnitz – 15.3.1944, Postcard from B. – Brinn Richard to Berlin – 7.1.1944"@eng . . . . "Postcard from B. – Gaertner to Prosnitz – 15.3.1944, Postcard from B. – Brinn Richard to Berlin – 7.1.1944"@eng . .