Foreign Relations of the United States, 1961–1963, Volume
VII, Arms Control and Disarmament
183. National Intelligence Estimate
Washington, [date not
declassified].
[Source: Department of State, S/S-RD Files: Lot
71 D 171, May-June 1962. Top Secret; Restricted Data. Extract—6 pages of
source text and the document number not declassified.]