Statistics for occurrence #1 of “Captain Kirwan” in alphabetic letter P, entry group 5, entry pirates of Harper's Encyclopedia of United States History:

... the name of piracy and the punishment of death were extended to the detention or transportation of any free negro or mulatto in any vessel as a slave. On June 28, 1861, the steamer St. Nicholas. Captain Kirwan , that plied between Baltimore and Point Lookout, at the mouth of the Potomac River, left the former place with forty or fifty passengers, including about twenty who passed for mechanics. There were...
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