A file of correspondence, reports, and maps concerning the Berlin air corridor. The documents discuss a meeting between British, French, and American representatives regarding the creation of a "tripartite line" for an upcoming round of talks with the Soviet Union to determine the future of the Berlin air corridor; the British belief that the American proposals for talks are "dictated less by practical considerations than by those of prestige"; and the Soviet proposal to combine the three existing Berlin air corridors into one wider corridor. The documents also contain a map of the French proposal for the Berlin air corridor; and a note on the first round of four-party talks negotiating the future of the Berlin air corridor, at which the Soviet Union agreed to drop its proposal to have a single air corridor. Other documents include a report on the use of visual signals within the Berlin air corridor.