PM : FBI Files undated

PM (New York, N.Y. : Daily).

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United States. Federal Bureau of Investigation

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The FBI established this classification when it assumed responsibility for ascertaining the protection capabilities and weaknesses of defense plants. Each plant survey was a separate case file, with the survey, supplemental surveys, and all communications dealing with a plant insofar as plant protection was concerned, filed together. On June 1, 1941, and January 5, 1942, the Navy and Army, respectively, assumed responsibility for surveying defense plants in which they had interests. Thereafter, ...