Statistics for occurrence #1 of “Harper's Ferry” in chapter 6 of Maj. Jed. Hotchkiss, Confederate Military History, a library of Confederate States Military History: Volume 3, Virginia:

...xtension of Bolivar heights to the Potomac, to command the approach by railway from the west. During the first week in June the Seventh and Eighth Georgia and the Second Tennessee regiments reached Harper's Ferry . On June 10th, Col. Lew Wallace, with the Eleventh Indiana, occupied Cumberland, Md., and on the 15th Patterson advanced his troops to Hagerstown from Chambersburg, Pa., where he had been collect...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Harper's Ferry (West Virginia, United States) 10,974 361 304 1 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.