The "Death Truck" from the Extermination Camp Chelmno
The Death Van in which the victims were suffocated by gas which was discharged from the engine.
(The picture was taken after liberation of the town Chelmno by the Polish Army)1.
Picture found among Meir Holtzman' old photographs, December 1998. No notes on the back of the picture. It is possible it was given to him by an acquaintance and it is possible that it is the picture of the gas van in Chelmno.
1) Source: "Chelmno, Death Camp for Total Extermination, Collection of Testimonies from Yad Vashem, Edited and Published By Ester Reiss, Jerusalem, 1995.