Statistics for occurrence #1 of “Boonsboro” in chapter 2.21 of John Esten Cooke, Wearing of the Gray: Being Personal Portraits, Scenes, and Adventures of War.:

.... The army was moving back, slow and defiant, to the Potomac. The cavalry protected its flanks and rear, fighting in the passes of South Mountain, and holding obstinately the ridge in front of Boonsboro , while General Lee formed his line to cover the crossing at Falling Waters and Williamsport. Here, near Boonsboro, Stuart did some of his hardest fighting, and successfully held his ground, crownin...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Boonsboro (Maryland, United States) 743 4 41 0 0 user votes
Boonsboro (Virginia, United States) 38 0 0 0 0 user votes
Boonsboro (Maryland, United States) 0 0 0 0 0 user votes
Boonsboro (Missouri, United States) 0 0 0 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.