«Poland Searches for Remains of World War II Hero Witold Pilecki - DER SPIEGEL - International». www.spiegel.de (på engelsk). 9. august 2012. Besøkt 27. juni 2020. «Witold Pilecki fought in three wars and even volunteered to be imprisoned at Auschwitz to send out intelligence reports. But, after the war, he was executed for opposing Poland's new communist leaders. Now the authorities are searching for his remains.»