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} 4 Oo rorm no. \ : } Office Memorandum + onriep states GOVERNMENT . . ns a TO ' Mr. Tolson ’ : DATE: 9/23/55 L. B. Nichols Int FROM ¢ supyecr: DONALD DUART MacLEAN; GUY FRANCIS De MONCY BURGESS ESPIONAGE - R \ Rn eeiareme.. 25.555 9/22/55, re! had received information from a reliable source indicating that Donald Duart MacLean, while assigned to the British Embassy in Washington, was a frequent ivisitor at the Central Intelligence Agency (CIA), MacLean was also reported to ‘have dated two GIA stenographers, Sill indicated that logs maintained by door guards at CIA "0" Building (located in front of the Lincoln Memorial parallel to the Reflectitq Pool) reflected that MacLean. often entered that particular building after hours. M@@@MB cic not reveal his source in this matter, ACTION: Fer information.