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

...ble to intercept or overtake his fast-riding rival. On the recrossing of the Potomac by Lee after Antietam, McClellan hastened to seize the debouche of the Shenandoah Valley, by the possession of Harper's Ferry . Two corps were posted in its vicinity, and the Potomac and Shenandoah spanned by ponton-bridges. At first McClellan contemplated pushing his advance against Lee directly down the Shenandoah Valley...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Harper's Ferry (West Virginia, United States) 10,974 160 304 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.