Pinkerton's National Detective Agency records, 1853-1999  (bulk 1880-1920). 

 - 63,000  items. 183  20  containers plus  oversize. 3  microfilm reels. 79  linear feet. 
<br/><br/> Open to research. 
<br/><br/> 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. 
<br/><br/>
<br/><br/><br/>Microfilm produced from originals in the Manuscript Division. <br/>Washington, D.C. : <br/>Library of Congress Photoduplication Service, <br/>1975. 
<br/><br/><br/>Some photographs <br/>Library of Congress Prints and Photographs Division. <br/>transferred to 
<br/><br/><br/>Private detective agency founded circa 1850 in Chicago, Ill., by Allan Pinkerton (1819-1884). 
<br/><br/><br/>Collection material in English. 
<br/><br/> Finding aid available in the Library of Congress Manuscript Reading Room and at  http://hdl.loc.gov/loc.mss/eadmss.ms003007 
<br/><br/><label>LCCN: </label>mm 75036301  
<br/><br/><label>Subjects--Personal Names: </label><br/>Cassidy, Butch, 1866- <br/>McParland, James P.<br/>Mudgett, Herman W., 1861-1896. <br/>Sundance Kid.
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Army of the Potomac. <br/>William J. Burns International Detective Agency.<br/>Molly Maguires (Organization)
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil defense--United States.<br/>Coal miners--Labor unions.<br/>Crime.<br/>Espionage--Washington (D.C.)<br/>Labor unions--Pennsylvania.<br/>Law enforcement.<br/>National security--United States.<br/>Private investigators.<br/>Sabotage--Washington (D.C.)<br/>World War, 1914-1918--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--History--Secret service.--Civil War, 1861-1865