Vasili Mitrokhin (Final)

CLASSIFIED BY: REASON: 1.4 C. C DECLASSIFY ON: 12-31-2049 DATE: 05-24-2018 SECRET (U FEDERAL BUREAU OF INVESTIGATION ALL INFORMATION CONTAINED HEREIN IS UNCLASSIFIED EXCEPT WHERE SHOWN OTHERWISE Precedence: PRIORITY To: All Field Offices From: National Security NS-1A, Room 4439 Contact: SSA Approved By: Drafted By: Case ID #: (S) (S) Title: (S) Synopsis: (U) Information on surveys conducted by the Russians for sabotage and infiltration in the U.S. during the 1950s and 1960s.