Pinkerton's National Detective Agency creator mixed material monographic eng 63,000 183 20 3 79 Correspondence, diaries, essays and other writings, reports, notes, police and prison records, code books, criminal rosters, exhibition texts, legal documents, biographical and genealogical records, procedural guidelines and training manuals, financial records, card indexes, photographs, reward notices, wanted posters, illustrations, maps, and other records chiefly documenting the work of the private detective agency for clients in business and industry. Includes papers of Pinkerton family members who led the agency, Allan (1819-1884), Allan's sons William A. (1846-1923) and Robert A. (1848-1907), Robert's son, Allan (1876-1930), and Allan's son, Robert A. (1904-1967). Also includes papers of George H. Bangs, longtime general superintendent of the New York office. Documents investigative methods, business principles and practices, and daily business activities. Topics include establishment by Pinkerton of the secret service in 1861 to protect the president and provide military intelligence for the Army of the Potomac, sabotage and espionage in the Washington, D.C., area during the Civil War, labor unrest and unionization in the Pennsylvania coal region, reports of James P. McParland in the investigation of the Molly Maguires, homeland security during World War I, the William J. Burns International Detective Agency, and criminals including Herman Mudgett, Butch Cassidy, and the Sundance Kid. Open to research. Microfilm edition of letterpress copybooks and reports available, no. 16,574. Microfilm produced from originals in the Manuscript Division. Washington, D.C. : Library of Congress Photoduplication Service, 1975. Some photographs transferred to Library of Congress Prints and Photographs Division. Private detective agency founded circa 1850 in Chicago, Ill., by Allan Pinkerton (1819-1884). Collection material in English. Finding aid available in the Library of Congress Manuscript Reading Room and at http://hdl.loc.gov/loc.mss/eadmss.ms003007 Cassidy, Butch 1866- McParland, James P Mudgett, Herman W 1861-1896 Sundance Kid United States. Army of the Potomac. William J. Burns International Detective Agency. Civil defense United States Coal miners Labor unions Crime Espionage Washington (D.C.) Labor unions Pennsylvania Law enforcement National security United States Private investigators Sabotage Washington (D.C.) Molly Maguires (Organization) World War, 1914-1918 United States United States History Civil War, 1861-1865 Secret service Bangs, George H. Pinkerton, Allan, 1819-1884 Pinkerton, Allan, 1876-1930 Pinkerton, Robert A., 1904-1967 Pinkerton, Robert A. (Robert Allan), 1848-1907 Pinkerton, William A. (William Allan), 1846-1923 mm 75036301 hdl:loc.mss/eadmss.ms003007 hdl:loc.mss/eadmss.ms003007.3 http://hdl.loc.gov/loc.mss/eadmss.ms003007 http://hdl.loc.gov/loc.mss/eadmss.ms003007.3 Open to research. DLC 760420 20260227111616.0 mm 75036301