Statistics for occurrence #1 of “Loudoun Heights” in chapter 8.69 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: Volume 2.:

...land and Loudoun Heights, and the other positions held by the enemy's artillery. The crest of Maryland Heights is at an elevation of 1060 feet; the southern point, nearest Harper's Ferry, 649 feet; Loudoun Heights , 954 feet. The south-western slope of the latter and the grounds near by, west of the Shenandoah, where batteries of the enemy were placed, were 300 to 600 feet high. The elevation of Bolivar Heigh...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Loudoun Heights (Virginia, United States) 203 52 3 0 0 user votes
Loudoun Heights (United States) 0 0 0 0 0 user votes

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