The following document comes from my friends over at

This is an extensive historical publication, with records going back to the 1920s.

According to the introduction, “This booklet has been prepared to acquaint peace officers and law- enforcement officials with the work of the Bureau of Investigation of the United States Department of Justice in its investigation of alleged violations of laws in which the United States is or may be a party in interest.”

Federal Bureau of Investigation (FBI) File No. 62-HQ- 21440, Informational Brochure Concerning the FBI, 1929-1946[ 1,180 Pages, 59.03MB ]

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