Statistics for occurrence #1 of “Boonsboro” in chapter 1.1 of Southern Historical Society Papers, Volume 26.:

...mersed in a mill pond. We have a rumor that the enemy are crossing the Rappahannock, and are told to be ready to meet them at any moment. Sept. 14. The anniversary of my memorable skirmish at Boonsboro (South-Mountain), Md., where I was flanked and captured. We are ordered to Summerville ford, near Rapidan Station, where the Yankees are threatening to attempt a passage. Marched very rapidly and...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Boonsboro (Maryland, United States) 743 3 41 1 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.