Camp Westerbork was a World War Two concentration camp in Hooghalen, ten kilometers north of Westerbork, in the northeastern Netherlands. Its function during the Second World War was to assemble Dutch Jews for transport to other Nazi concentration camps.
This report was apparently produced by a member of a resistance group asssociated with the camp by the name of Bettleheim. Nothing further is known about him.
From the guide to the Westerbork concentration camp: report and correspondence, 1944-1959, (Wiener Library)