On 28 October 1947 in Kraków, a member of the Kraków District Commission for the Investigation of German Crimes in Poland, Municipal Judge Dr Henryk Gawacki, acting at the written request of the first prosecutor of the Supreme National Tribunal dated 25 April 1947 (file no. NTN 719/47), in accordance with the provisions of and procedure provided for under the Decree of 10 November 1945 (Journal of Laws of the Republic of Poland No. 51, item 293), pursuant to article 254, 107, 115 of the Code of Criminal Procedure, heard as a witness the below mentioned former prisoner of the concentration camp in Auschwitz, who testified as follows:
| Name and surname | Józef Węgrzyn |
| Age | 45 |
| Religious affiliation | Roman Catholic |
| Nationality | Polish |
| Occupation | private clerk |
| Place of residence | Kraków, Szlak Street 63, flat 21 |
| I | was imprisoned in the Auschwitz camp from 15 December 1940 until 27 October 1944 |
as Polish political prisoner no. 6954. During all this time I worked in a concrete plant (Betonkolonne) and there I met MP Stanisław Dubois.
Before the war, I didn’t know him personally. In the camp he wore the name Stanisław Dębski. Those closer to him knew full well that Stanisław Dubois was hiding under that name. I don’t know his prisoner’s number. In the first half of 1942 – I can’t be more specific about the date – the very same Stanisław Dębski was summoned to report to the office (Schreibstube). He returned with a package, sent, so they said, from Sweden. During this time, the prisoners were not able to receive packages from their families and that’s why this incident caught everyone’s attention. I think that it was a food package and Dubois complained that some things had been stolen from it. Two days later, or maybe the next day, Dubois was again summoned to the office and he never came back.
My fellow prisoners said that he was summoned to the Political Department and shot in block 11 some time later. As for the address on that package, I don’t know what it was. My guess is that Stanisław Dębski’s number must have been given on this package, and on the grounds of this number Stanisław Dubois was handed this package. Whether or not I talked to him about this package, I don’t really remember today. Dubois worked until the very last moment and he was in good physical shape when you consider the camp conditions.
At that time, almost all the prisoners from the “concrete plant” lived in block 22a. The following people had closer relations with Stanisław Dubois: Dr. Stanisław Sosnowski, lawyer, a resident of Dynów before his imprisonment in Auschwitz, Dr. Józef Krzywański, a resident of Kalisz before deportation to the camp, now residing in Warsaw. If I am not mistaken, the “cement plant’s” writer at that time – crucial for Dubois – was Tadeusz Zaleski, residing in Kraków, Dietla Street 31, flat 6a.
The report was concluded, read out and signed.