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1. Pinkerton's National Detective Agency records, 1853-1999

   63,000 items. 185 containers plus 20 oversize. 80 linear feet. 3 microfilm reels. -- Manuscript Division, Library of Congress, Washington, D.C.

   Summary:

   Private detective agency directed by the Pinkerton family to protect interests of clients in business and industry. The records include business and family correspondence; biographical and genealogical records; administrative records such as procedural guidelines and training manuals; criminal case files which include correspondence, reports, photographs, legal documents, and printed matter; and draft manuscripts and printing plates.