(EST Pub Date) the Office of Scientific Intelligence, 1949-68- (Volume Three, Annexes Viii, Ix, and X)

to the Office. It is clear from the record, however, that many days of staff work by OSI personnel were necessary to plan such a meeting and support its work. The use of special consultants in the field of guided missile intelligence began seriously in 1954 in connection with the preparation of an OSI contribution to a national estimate. A panel of four experts not only reviewed pertinent information and assisted in preparing the draft contribution, but stayed with the contribution and defended it during the entire estimate process through USIB approval. As a result the assessments of the Soviet missile threat varied widely among the various intelligence agencies involved with the estimate. Against this - 12 - TOP SECRET