A file of correspondence and reports concerning crossing points between Berlin and East Germany. The documents include a record of a meeting between the Berlin Senate and the East German Government Visits Commissioners concerning the northern checkpoints; and a court decision regarding the building of an autobahn link road, which has been the subject of demonstrations due to the felling of trees in Tegel forest. The file also covers concerns over air pollution caused by power stations in West Berlin; and the refusal of entry into East Berlin for West Berliners wishing to attend the funeral of a leading dissident, Robert Havemann.