Statistics for occurrence #1 of “Maryland Heights” in chapter 6 of William Swinton, Campaigns of the Army of the Potomac:

...ed before the evening of the 13th, at which time they were very feebly guarded, and then debouching into Pleasant Valley, the Union commander might next morning have fallen upon the rear of McLaws at Maryland Heights , and relieved Harper's Ferry, which did not surrender till the morning of the 15th. But he did not arrive at South Mountain until the morning of the 14th; and by that time the Confederates, forewar...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Maryland Heights (Maryland, United States) 1,168 36 6 0 0 user votes
Maryland Heights (Missouri, United States) 28 0 0 0 0 user votes
Maryland Heights (Louisiana, United States) 15 0 1 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.