On 23 August 1947 in Kraków, a member of the Main Commission for the Investigation of German Crimes in Poland, Appellate Investigative Judge Jan Sehn, acting upon request of the first prosecutor of the Supreme National Tribunal, this dated 25 April 1947 (file no. NTN 719/47) and 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) in connection with Article 254, 107 and 115 of the Code of Criminal Procedure, interviewed the person named below as a witness, who testified as follows:
| Name and surname | Władysław Grabowski |
| Age | 61 years old |
| Religious affiliation | Roman Catholic |
| Citizenship and nationality | Polish |
| Occupation | fitter |
| Place of residence | Kraków, Kołłątaja Street 9 |
The German Labor Office in Kraków assigned me to work in a German installation company by the name of Rekener at Dietlowska Street 29 in Kraków. This company sent me and many others to work in the camp in Majdanek near Lublin. I installed water supply lines in the barracks for prisoners there from April till August of 1943. I worked there during the typhus fever epidemic, and every day a few dead prisoners were taken away from the barracks. I lived with other civilian workers in a separate barrack outside the camp, and we entered and exited the camp premises under German supervision. Since I had the opportunity to enter the camp while living outside of it, I could take some medicaments and food for prisoners from the people I came into contact with outside of the camp.
I was also in contact with a physician, Dr. Nowak from Kraków, who currently works in the St. Lazarus Hospital.
I didn’t perform any work in the crematorium, nor do I know the head of the crematorium, nor have I heard the name of Muhsfeldt, nor do I recognize the person in the photograph presented to me (the photograph of suspect Muhsfeldt was presented to the witness).
The report was read out.