December 1962
“In the month of December 1962, the situation at the sector and zone border was largely unchanged and peaceful. To note are three explosions at the 'Wall' that caused considerable damage – mostly by destroying windows – on the western side, but relatively little to the border barriers”, the West Berlin police write in their report on developments at the sector and zone border.
Report by the West Berlin police on the situation on the sector and zone border, incidents on suburban and East German Reichsbahn (Reich Railway) premises and other events of political significance for the month December 1962 (in German)