43470566
9781421420561
O'Hara, Stephen P. is the author of 'Inventing the Pinkertons, or, Spies, Sleuths, Mercenaries, and Thugs : Being a Story of the Nation's Most Famous (and Infamous) Detective Agency and the Contentious Rise of Modern Industrial Order, 1850-1937', published 2016 under ISBN 9781421420561 and ISBN 1421420562.
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