We never sleep
Subtitle: the first fifty years of the Pinkertons
By: by Frederick Voss and James Barber.
Contributors: Barber, James, 1952-; National Portrait Gallery (Smithsonian Institution)
Publisher: Published for the National Portrait Gallery by the Smithsonian Institution Press; For sale by the Supt. of Docs., U.S.G.P.O.
Published: 1981
Place of publication: Washington, D.C
Language: eng
Number of pages: 31
Subjects: Pinkerton, Allan, 1819-1884 -- Exhibitions.; Pinkerton's National Detective Agency -- History -- Exhibitions.; Private investigators -- United States -- Biography -- Exhibitions.
Notes: Catalog of an exhibition held at the National Portrait Gallery, July 31, 1981, to January 3, 1982.