Statistics for occurrence #1 of “Harper's Ferry” in chapter 5 of Historic leaves, volume 1, April, 1902 - January, 1903:

...nk of my horse, carrying a part of my coat tails with it. The horse, in falling, carried me under him, dislocating my knee. This laid me up for some time. While the Tenth Maine was quartered at Harper's Ferry , Captain West's company (D) was provost guard, and Captain West was provost-marshal of Harper's Ferry and vicinity. The enemy was obliged to retire up the valley. As my wife was very ill at hom...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Harper's Ferry (West Virginia, United States) 10,974 31 304 1 0 user votes

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