Survey of Treblinka, January 1943-08 February 1943 Description of the camp by the survivors who succeeded in escaping from the camp; establishment of the Treblinka concentration camp, 1940; conversion of the concentration camp into an extermination camp, March 1942; stages in construction of the camp; setting up facilities for extermination; Sauer's tenure as camp commandant; tenure of SS men and Ukrainians as staff people at the camp; murder of Jews in gas chambers in the camp. Notes: - Published in "Glosu Warszawy" - Copy of the original material dug up from deep in the gorund and taken out of the ghetto.