A transcript of an SED Politburo Session discussing Hungary's decision to open its western border and allow East German citizens to cross into Austria.

A memorandum for President Nixon from National Security Advisor Henry Kissinger on the current status of West German Chancellor Willy Brandt's "Ostpolitik" or Eastern Policy, which sought to normalize relations between West Germany and the communist countries.

Excerpt from a conversation in which Polish Communist leaders Jozef Cyrankiewicz and Wladyslaw Gomulka remind Walter Ulbricht of how they suggested closing the border between East and West Berlin years before the Berlin Wall was constructed.