Statistics for occurrence #1 of “Harper's Ferry” in chapter 6, page 206 of William Swinton, Campaigns of the Army of the Potomac:

...wn the declivity. Thus Maryland Heights was abandoned altogether. McLaws succeeded in dragging some pieces up the rugged steep, and Jackson and Walker being already in position, the investment of Harper's Ferry was by the morning of the 14th complete. The Bolivar and
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Entity Corpus Doc Corpus Doc  
Harper's Ferry (West Virginia, United States) 10,974 160 304 0 0 user votes

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